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2011 MRS Fall Meeting & Exhibit

November 28-December 2, 2011 | Boston

Meeting Chairs: Cammy R. Abernathy, Paul V. Braun, Masashi Kawsaki, Kathyn J. Wahl

Symposium I : Fundamental Processes of Solar Harvesting in Excitonic Solar Cells

2011-11-28   Show All Abstracts

Symposium Organizers

Venkat Bommisetty South Dakota State University
Mario Leclerc Universite Laval
Vladimir Dyakonov Julius-Maximilians University of Wuerzburg
Garry Rumbles National Renewable Energy Laboratory
Niyazi Serdar Sariciftci Johannes Kepler University of Linz
I1: Recombination
Session Chairs
Venkat Bommisetty
Vladimir Dyakonov
Monday PM, November 28, 2011
Liberty (Sheraton)

9:30 AM - **I1.1
Lessons from Nature about Solar Light Harvesting.

Gregory Scholes 1
1 Department of Chemistry, Univesity of Toronto, Toronto, Ontario, Canada

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10:00 AM - I1.2
Generation and Recombination of Polaron Pairs in Low-Bandgap Copolymers for Photovoltaics.

Enrico Da Como 1 , Raphael Tautz 1 , Jochen Feldmann 1 , Ullrich Scherf 2
1 Department of Physics and CeNS, LMU Munich, Munich Germany, 2 Department of Chemistry, University of Wuppertal, Wuppertal Germany

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10:15 AM - I1.3
Reciprocal Carrier Collection in Organic Photovoltaics.

Christopher Renshaw 1 , Cody Schlenker 2 , Mark Thompson 2 , Stephen Forrest 1 3 4
1 Physics, University of Michigan, Ann Arbor, Michigan, United States, 2 Chemistry, University of Southern California, Los Angeles, California, United States, 3 Electrical Engineering and Computer Science, University of Michigan, Ann Arbor, Michigan, United States, 4 Materials Science and Engineering, University of Michigan, Ann Arbor, Michigan, United States

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10:30 AM - I1.4
Charge Carriers and Charge-Transfer Excitons in Realistic Organic Solar Cells Probed by Electrically Detected Magnetic Resonance.

Wolfgang Harneit 1 2 , Sebastian Schaefer 3 2
1 Institut fuer Physikalische Chemie, Johannes Gutenberg-Univeritaet Mainz, Mainz Germany, 2 Institut fuer Experimentalphysik, Freie Universitaet Berlin, Berlin Germany, 3 Physik der Weichen Materie, Universitaet Potsdam, Potsdam-Golm Germany

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10:45 AM - I1.5
Localized State Spectroscopy in Organic Solar Cells.

Robert Street 1 , Katherine Song 1 , Alexa Krakaris 1
1 , Palo Alto Research Center, Palo Alto, California, United States

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11:00 AM - *
Coffee Break

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11:30 AM - **I1.6
Charge Photogeneration and Recombination in Organic Solar Cells.

James Durrant 1
1 Chemistry, Imperial College London, London United Kingdom

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12:00 PM - I1.7
Recombination Processes in Disordered Organic Bulk–Heterojunction Solar Cells.

Alexander Wagenpfahl 1 , Craig Peters 2 , Eric Hoke 2 , Zach Beiley 2 , Michael McGehee 2 , Carsten Deibel 1 , Vladimir Dyakonov 1 3
1 Experimental Physics VI, Julius-Maximilians-University of Würzburg, Würzburg Germany, 2 Department of Material Science and Engineering, Stanford University, Stanford, California, United States, 3 Functional Materials for Energy Technology, Bavarian Centre for Applied Energy Research (ZAE Bayern), Würzburg Germany

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12:15 PM - **I1.8
Understanding and Affecting the Mechanisms in Excitonic Solar Cells.

Nir Tessler 1 , Lior Tzabari 1 , Nir Nir Yaacobi-Gross 1 , Israel Ravia 1
1 Electrical Engineering, Technion, Haifa Israel

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12:45 PM - I1.9
Studies of Transport and Recombination in Polymer:Fullerene Bulk Heterojunction Systems.

Jao van de Lagemaat 1 4 , Anthony Morfa 2 , Alexandre Nardes 2 , Sean Shaheen 3 1 , Nikos Kopidakis 1 , Brian Gregg 1 , Ziqi Liang 1 , Jian Li 5
1 Chemical and Materials Sciences Center, NREL, Golden, Colorado, United States, 4 Renewable and Sustainable Energy Institute, University of Colorado Boulder, Boulder, Colorado, United States, 2 School of Chemistry & Bio21 Institute, University of Melbourne, Melbourne, Victoria, Australia, 3 Department of Physics and Astronomy, University of Denver, Denver, Colorado, United States, 5 National Center for Photovoltaics, NREL, Golden, Colorado, United States

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I2: Morphology I
Session Chairs
Venkat Bommisetty
NiyaziSerdar Sariciftci
Monday PM, November 28, 2011
Liberty (Sheraton)

2:30 PM - **I2.1
Origin of Open-Circuit Voltage in Organic Solar Cells Elucidated by Photoconductive Atomic Force Microscopy.

Thuc-Quyen Nguyen 1 , Xuan-Dung Dang 1 , Yuan Zhang 1 , Sarah Cowan 2 , Chunki Kim 1
1 Chemistry & Biochemistry, UCSB, Santa Barbara, California, United States, 2 Materials, UCSB, Santa Barbara, California, United States

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3:00 PM - I2.2
The Universality of Polymer-Fullerene Miscibility and Its Implications for Organic Photovoltaics.

Harald Ade 1 , Brian Collins 1 , Xiaoxi He 2 , Eliot Gann 1 , Christopher McNeill 3
1 Physics, NC State University, Raleigh, North Carolina, United States, 2 Cavendish Laboratory, University of Cambridge, Cambridge, CB3 0HE, United Kingdom, 3 Materials Engineering, Monash University, Clayton, Victoria, Australia

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3:15 PM - I2.3
Connecting Morphology with Dominant Recombination Mechanisms in P3HT:PCBM Based Organic Bulk Heterojunction Solar Cells.

Pavel Dutta 1 , Mukesh Kumar 1 , Monika Rathi 2 , Scott Ahrenkiel 2 , David Galipeau 1 , Venkat Bommisetty 1
1 Electrical Engineering, South Dakota State University, Brookings, South Dakota, United States, 2 Nanoscience and Nanoengineering Department, South Dakota School of Mines & Technology, Rapid City, South Dakota, United States

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3:30 PM - I2.4
Charge Transport in Bulk Heterojunctions: The Influence of Morphology, Electric Field, and Charge Carrier Concentration.

L. Jan Anton Koster 1 2
1 Molecular Materials and Nanosystems, Eindhoven University of Technology, Eindhoven Netherlands, 2 Molecular Electronics, Zernike Institute for Advanced Materials, University of Groningen, Groningen Netherlands

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3:45 PM - I2.5
Morphological Diversity in P3HT-Endohedral Fullerene Organic Solar Cells.

Lee Richter 1 , Andrew Herzing 1 , R. Joseph Klein 1 , Dean DeLongchamp 1 , Daniel Fisher 1 , David Gundlach 1 , Claudia Cardona 2 , John Wall 2 , Francis Swain 2 , Steve Joslin 2
1 , NIST, Gaithersburg, Maryland, United States, 2 , Luna Innovations, Danville, Virginia, United States

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4:00 PM - *
Coffee Break

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I3: Hybrid
Session Chairs
Dmitri Kilin
Garry Rumbles
Monday PM, November 28, 2011
Liberty (Sheraton)

4:30 PM - I3.1
Design and Characterization of Functional Materials for Highly Efficient Dye-Sensitized Solar Cells.

Eric Diau 1
1 Department of Applied Chemistry, National Chiao Tung University, Hsinchu Taiwan

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4:45 PM - **I3.2
Enhancing and Understanding Charge Generation in Mesoscopic Hybrid Solar Cells.

Henry Snaith 1
1 , Oxford University, Oxford, OXON, United Kingdom

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5:15 PM - I3.3
Photo-Induced Dynamics of Electronic Excitations in RuO2 Nano-Catalyst at a TiO2 Substrate.

Talgat Inerbaev 2 , James Hoefelmeyer 1 , Dmitri Kilin 1
2 , South China Normal University, Guangzhou China, 1 Chemistry, University of South Dakota, Vermillion, South Dakota, United States

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5:30 PM - I3.4
Interplay of Three-Dimensional Morphologies and Photocarrier Dynamics of Polymer/TiO2 Bulk Heterojunction Solar Cells.

Chun-Wei Chen 1 , Shao-Sian Li 1 , Ching-Pin Chang 1 2 , Chih-Cheng Lin 1 , Ming-Wen Chu 2
1 Materials Science and Engineering, National Taiwan University, Taipei Taiwan, 2 Center for Condensed Matter Sciences, National Taiwan University, Taipei Taiwan

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5:45 PM - I3.5
Energy-Level Alignment at the ZnO/P3HT Photovoltaic Interface.

Feliciano Giustino 1 , Keian Noori 1
1 Materials, University of Oxford, Oxford United Kingdom

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2011-11-29   Show All Abstracts

Symposium Organizers

Venkat Bommisetty South Dakota State University
Mario Leclerc Universite Laval
Vladimir Dyakonov Julius-Maximilians University of Wuerzburg
Garry Rumbles National Renewable Energy Laboratory
Niyazi Serdar Sariciftci Johannes Kepler University of Linz
I4: Excitons and Transport
Session Chairs
Vladimir Dyakonov
Garry Rumbles
Tuesday AM, November 29, 2011
Liberty (Sheraton)

9:00 AM - **I4.1
Size-Free Electronic Tuneability and Multiple Excitons in Alloyed Colloidal Quantum Dots and Rods.

Efrat Lifshitz 1 , Roman Vaxenberg 1 , Evgeniy Tilchin 1 , Georgy Maikov 1 , Diana Yanover 1 , Anna Brusilovsky 1 , Dikla Ahitov 1 , Alina Amel 1 , Aldona Sashchiuk 1
1 Schulich Faculty of Chemistry, Technion IIT, Haifa Israel

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9:30 AM - **I4.2
Charge Transfer Excitons in Bulk Heterojunctions Solar Cells.

Maria Antonietta Loi 1
1 , University of Groningen, Groningen Netherlands

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10:00 AM - I4.3
Understanding Charge Transport Characteristics in Hybrid Photovoltaic Devices Based on Controlled Donor-Acceptor Interfaces.

Beau Richardson 1 , John Bae 1 , Leize Zhu 1 , Qiuming Yu 1
1 Chemical Engineering, University of Washington, Seattle, Washington, United States

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10:15 AM - I4.4
Surface Nature of Photoconductivity and Long-Range Exciton Diffusion in Rubrene.

Vitaly Podzorov 1
1 Physics, Rutgers University, Piscataway, New Jersey, United States

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10:30 AM - **I4.5
Charge Transfer States, Photovoltages and Photocurrents in Donor/Acceptor Heterojunctions.

Koen Vandewal 1 , Kristofer Tvingstedt 1 , Olle Inganas 1
1 Biomolecular and organic electronics, IFM, Linkoping University, Linkoping Sweden

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11:00 AM - *
Coffee Break

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11:30 AM - **I4.6
Photoinduced Charge Separation Processes in Organic Photovoltaic Blends: High-Frequency EPR Spectroscopy.

Oleg Poluektov 1
1 Chemical Sciences and Engineering Division, Argonne National Laboratory, Argonne, Illinois, United States

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12:00 PM - I4.7
Correlating Charge Creation with the Gibbs Free Energy Driving Force in Organic Photovoltaic Blends.

David Coffey 1 , Bryon Larson 2 1 , Olga Boltalina 2 , Steven Strauss 2 , Garry Rumbles 1
1 , National Renewable Energy Laboratory, Golden, Colorado, United States, 2 , Colorado State University, Fort Collins, Colorado, United States

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12:15 PM - **I4.8
Singlet Fission in Covalent Dimers and Solid-State Polyacene Materials.

Chris Bardeen 1
1 Chemistry, U. California Riverside, Riverside, California, United States

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12:45 PM - I4.9
Charge Separation and Relaxation in Phthalocyanine-C60 Photovoltaic Systems.

Steven Robey 1 , Gregory Dutton 1
1 , NIST, Gaithersburg, Maryland, United States

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I5/H5: Joint Session: Materials
Session Chairs
Alex Jen
Christoph Lungenschmied
Tuesday PM, November 29, 2011
Grand Ballroom (Sheraton)

2:30 PM - **I5.1/H5.1
Charge Recombination and Transport Dynamics in Organic Solar Cells.

Alan Heeger 1
1 Center for Polymers and Organic Solids, Department of Physics and Materials Engineering, University of California, Santa Barbara, Santa Barbara, California, United States

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3:00 PM - **I5.2/H5.2
All-Conjugated Block Copolymers and Thiophene-Based Conjugated Polyelectrolytes for Organic Photovoltaics.

Ullrich Scherf 1
1 , Bergische Universitaet , Wuppertal Germany

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3:30 PM - **I5.3/H5.3
Are We There Yet? - Design of Better Conjugated Polymers for Polymer Solar Cells.

Luping Yu 1
1 Chemistry, The University of Chicago, Chicago, Illinois, United States

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4:00 PM - *
Coffee Break

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4:30 PM - **I5.4/H5.4
Materials for Photon Harvesting in Organic Solar Cells.

Paul Burn 1 , Paul Meredith 1
1 Centre for Organic Photonics & Electronics, The University of Queensland, Brisbane, Queensland, Australia

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5:00 PM - **I5.5/H5.5
Non-Fullerene Acceptors for Organic Photovoltaics.

John Anthony 1
1 Chemistry, Univ of Kentucky, Lexington, Kentucky, United States

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5:30 PM - **I5.6/H5.6
Solution Processable Small Molecules for High Efficiency Organic Solar Cells.

Gui Bazan 1 , Greg Welch 1 , Yanming Sun 1 , Wei Lin Leong 1 , Chris Takacs 1 , Alan Heeger 1
1 Materials, University of California, Santa Barbara, California, United States

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2011-11-30   Show All Abstracts

Symposium Organizers

Venkat Bommisetty South Dakota State University
Mario Leclerc Universite Laval
Vladimir Dyakonov Julius-Maximilians University of Wuerzburg
Garry Rumbles National Renewable Energy Laboratory
Niyazi Serdar Sariciftci Johannes Kepler University of Linz
I6: Microstructure and Interfaces
Session Chairs
Marc Baldo
Venkat Bommisetty
Wednesday AM, November 30, 2011
Liberty (Sheraton)

9:00 AM - **I6.1
Carrier Dynamics, Fluctuations and Imaging Studies of Polymer Based Bulk Heterostructure Blends.

K Narayan 1 , Monojit Bag 1 , Sabyasachi Mukhopadhyay 1
1 , JNCASR, Bangalore India

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9:30 AM - **I6.2
The Influence of the Acceptor on the Photophysics of Organic Bulk Heterojunctions.

Nikos Kopidakis 1
1 , National Renewable Energy Laboratory, Golden, Colorado, United States

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10:00 AM - **I6.3
Spin Engineering in Organic Solar Cells.

Marc Baldo 1
1 Center for Excitonics, MIT, Cambridge, Massachusetts, United States

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10:30 AM - *
Coffee Break

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11:00 AM - **I6.4
Polarizing Organic Photovoltaics.

Rui Zhu 1 , Ankit Kumar 1 , Yang Yang 1
1 Materials Sci and Engineering, Univ. of California Los Angeles, Los Angeles, California, United States

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11:30 AM - I6.5
Controlling Recombination via Charge Transfer Excitons in Polymer:Fullerene Blends with Molecular Doping.

Elizabeth von Hauff 1 2 , Felix Deschler 3 , Enrico Da Como 3 , Jochen Feldmann 3 , Sybille Allard 4 , Ullrich Scherf 4
1 Physics, University of Freiburg, Freiburg Germany, 2 , Fraunhofer Institute for Solar Energy Systems, Freiburg Germany, 3 Photonics and Optoelectronics Group, Department of Physics and CeNS, Ludwig-Maximillians-University Munich, Munich Germany, 4 Department of Chemistry and Institute of Polymer Chemistry, Wuppertal University, Wuppertal Germany

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11:45 AM - I6.6
Enhancing the Efficiency of Bulk Heterojunction Solar Cells through Engineering of Metal Electrode - Active Layer Interface.

Mukesh Kumar 1 , Chong Chen 1 , Pavel Dutta 1 , Venkat Bommisetty 1
1 Electrical Engineering, South Dakota State University, Brookings, South Dakota, United States

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12:00 PM - I6.7
Efficiency-Limiting Processes in Bulk Heterojunction Organic Solar Cells.

Frederic Laquai 1 , Ian Howard 1 , Ralf Mauer 1 , Fabian Etzold 1 , Michael Meister 1 , Don Cho 1 , Nam Seob Baek 3 , Tae-Dong Kim 2 , Kwang-Sup Lee 2 , Klaus Muellen 1
1 Max Planck Research Group for Organic Optoelectronics, Max Planck Institute for Polymer Research, Mainz Germany, 3 IT Convergence Technology Research Laboratory, Electronics and Telecommunications Research Institute, Daejeon Korea (the Republic of), 2 Department of Advanced Materials, Hannam University, Daejeon Korea (the Republic of)

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12:15 PM - I6.8
Control of P3HT Ordering in P3HT/PCBM Photovoltaic Active Layers Formed from Initial P3HT:PCBM Bilayers.

Lesley Thompson 1 , Mark Dadmun 1 , Chris Milojevich 1 , Jon Camden 1
1 , University of Tennessee at Knoxville, Knoxville, Tennessee, United States

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12:30 PM - I6.9
Enhanced Exciton Dissociation in Organic Photovoltaic Layers Doped with Ferroelectric Dipoles.

Kanwar Nalwa 1 , John Carr 1 , Rakesh Mahadevapuram 1 , Hari Kodali 2 , Sayantan Bose 3 , Yuqing Chen 1 , Jacob Petrich 3 , Baskar Ganapathysubramanian 2 , Sumit Chaudhary 1
1 Department of Electrical and Computer Engineering, Iowa State University, Ames, Iowa, United States, 2 Department of Mechanical Engineering, Iowa State University, Ames, Iowa, United States, 3 Department of Chemistry, Iowa State University, Ames, Iowa, United States

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12:45 PM - I6.10
Optical T-Matrix and Kinetic Monte Carlo Modeling of Nanostructured Planar Heterojunction Solar Cells.

Geraldine Paulus 1 , Moon-Ho Ham 1 , Michael Strano 1
1 Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States

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I7: Microstructure - Carrier Dynamics
Session Chairs
Richard Friend
Serdar Sariciftci
Wednesday PM, November 30, 2011
Liberty (Sheraton)

2:30 PM - **I7.1
Singlet Fission and Interchromophore Coupling in Designed Molecular Chromophores.

Justin Johnson 1 , Akin Akdag 2 , Brian Stepp 2 , Millie Smith 2 , Josef Michl 2 , Arthur Nozik 1 2
1 , National Renewable Energy Laboratory, Golden, Colorado, United States, 2 Department of Chemistry and Biochemistry, University of Colorado, Boulder, Colorado, United States

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3:00 PM - **I7.2
Coherent Spin Spectroscopy of Excitonic Precursor States of Organic Thin Film Semiconductor Devices.

Christoph Boehme 1 , William Baker 1 , Sang-Yun Lee 1 , Seo-Young Paik 1 , Dane McCamey 1 , Kipp Van Schooten 1 , John Lupton 1
1 Department of Physics and Astronomy, University of Utah, Salt Lake City, Utah, United States

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3:30 PM - **I7.3
Dynamics of Light-Induced Charge Carriers in Poly(Thienothiophene) Derivatives Blended with PCBM.

Tom Savenije 1
1 Department of Chemial Engineering, Delft University of Technology, Julianalaan 136 Netherlands

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4:00 PM - *
Coffee Break

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4:30 PM - **I7.4
Role of Polaron Formation in Limiting the Charge Generation Efficiency of Organic Bulk Heterojunction Solar Cells.

Richard Friend 1 , A. Bakulin 1 , A. Rao 1
1 Department of Physics, Cavendish Laboratory, University of Cambridge, Cambridge United Kingdom

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5:00 PM - **I7.5
Influence of Acceptor Structure on Charge Separation Dynamics in Organic Photovoltaic Materials.

John Asbury 1 , Ryan Pensack 1
1 Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania, United States

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5:30 PM - I7.6
Charge Separation in Semicrystalline Polymeric Semiconductors by Photoexcitation: Is the Mechanism Intrinsic or Extrinsic?

Francis Paquin 1 , Maciej Sakowicz 1 , Gianluca Latini 2 , Paul-Ludovic Karsenti 1 , Linjun Wang 3 , David Beljonne 3 , Natalie Stingelin-Stutzmann 2 , Carlos Silva 1
1 Department of Physics, Universite de Montreal, Montreal, Quebec, Canada, 2 Department of Materials, Imperial College, London United Kingdom, 3 Chemistry of Novel Materials, University of Mons, Mons Belgium

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5:45 PM - I7.7
Surfactant-Assistant Supramolecular Control of Poly(2,5-bis(3-tetradecylthiophen-2-yl)thieno[3,2-b]thiophene) (pBTTT): [6,6]-phenyl C61-butyric Acid Methyl Ester (PCBM[60]) Blend Microstructures.

Ester Buchaca-Domingo 1 , Fiona Jamieson 1 , Nikos Kopidakis 2 , Giuseppe Portale 3 , James Durrant 1 , Garry Rumbles 2 4 , Natalie Stingelin 1
1 Centre for Plastic Electronics (CPE), Imperial College London, London United Kingdom, 2 Chemical and Materials Science Center, National Renewable Energy Laboratory, Golden, Colorado, United States, 3 , ESRF Grenoble, Grenoble France, 4 Department of Chemistry and Biochemistry, University of Colorado, Boulder, Colorado, United States

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2011-12-01   Show All Abstracts

Symposium Organizers

Venkat Bommisetty South Dakota State University
Mario Leclerc Universite Laval
Vladimir Dyakonov Julius-Maximilians University of Wuerzburg
Garry Rumbles National Renewable Energy Laboratory
Niyazi Serdar Sariciftci Johannes Kepler University of Linz
I8: Organic Photovoltaics: Materials Challenges
Session Chairs
Venkat Bommisetty
Mario Leclerc
Thursday AM, December 01, 2011
Liberty (Sheraton)

9:30 AM - **I8.1
Textured Donor Layers in Organic Solar Cells: Vacuum-Deposited and Solution Processed Small Molecules.

Neal Armstrong 1 , Diogenes Placencia 1 , Jeremy Gantz 1 , Xerxes Steirer 1 , Derek Manglesdorf 1 , Mayank Mayukh 1 , Weining Wang 1 , Mariola Macech 1 , Dominic McGrath 1
1 Chemistry & Biochemistry, University of Arizona, Tucson, Arizona, United States

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10:00 AM - **I8.2
Efficient Broadband up-Conversion of near-IR Light.

Wenqiang Zou 1 , Cindy Visser 1 , Maxim Pchenitchnikov 2 , Jan Hummelen 1 2
1 Stratingh Institute for Chemistry, University of Groningen, Groningen Netherlands, 2 Zernike Institute for Advanced Materials, University of Groningen, Groningen Netherlands

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10:30 AM - **I8.3
Field- and Temperature Dependence of Charge Photogeneration in Organic Bulk Heterojunction Solar Cells.

Markus Mingebach 1 , Stefan Walter 1 , Jens Lorrmann 1 , Carsten Deibel 1 , Vladimir Dyakonov 1 2
1 Experimental Physics VI, Julius-Maximilian University of Würzburg, Würzburg, Bavaria, Germany, 2 , Bavarian Centre for Applied Energy Research (ZAE Bayern), Würzburg, Bavaria, Germany

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11:00 AM - *
Coffee Break

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11:30 AM - **I8.4
New Donor-Acceptor Copolymer Semiconductors for Highly Efficient Solar Cells.

Samson Jenekhe 1 2 , Selvam Subramaniyan 1 , Hao Xin 1 , Felix Sunjoo Kim 1
1 Chemical Engineering, University of Washington, Seattle, Washington, United States, 2 Chemistry, University of Washington, Seattle, Washington, United States

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12:00 PM - I8.5
High Fill Factor and Open-Circuit Voltage in Organic Photovoltaic Cells with Diindenoperylene as Donor Material.

Julia Wagner 1 , Mark Gruber 1 , Alexander Hinderhofer 2 , Andreas Wilke 3 , Andreas Optiz 1 , Norbert Koch 3 , Frank Schreiber 2 , Wolfgang Bruetting 1
1 Institute of Physics, University of Augsburg, Augsburg Germany, 2 Institute of Applied Physics, University of Tuebingen, Tuebingen Germany, 3 Insitute of Physics, Humboldt-University of Berlin, Berlin Germany

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12:15 PM - **I8.6
Organic Semiconductor Chemistry.

Seth Marder 1 , Lauren Polander 1 , Stephen Barlow 1 , Shree Tiwari 1 , Brian Seifried 1 , Bernard Kippelen 1 , Chad Risko 1 , Jean-Luc Bredas 1 , Tissa Sajoto 1 , Sang Bok Kim 1 , Swagat Mohapatra 1 , Song Guo 1 , Yabing Qi 2 , Wei Zhao 2 , Antoine Kahn 2
1 Center for Organic Photonics and Electronics, Georgia Institute of Technology, Atlanta, Georgia, United States, 2 Electrical Engineering, Princeton University, Princeton, New Jersey, United States

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12:45 PM - I8.7
Harvesting near-IR Irradiation Using Electron-Accepting Conjugated Polymers Based on Aza-Dipyrromethene Dyes.

Genevieve Sauve 1 , Lei Gao 1 , Cassie Daddario 1 , Zhenghao Mao 1 , Kenneth Singer 2 , Lei Zhu 3 , Saide Tang 3
1 Chemistry, Case Western Reserve University, Cleveland, Ohio, United States, 2 Physics, Case Western Reserve University, Cleveland, Ohio, United States, 3 Macromolecular Science and Engineering, Case Western Reserve University, Cleveland, Ohio, United States

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I9: Nanocrystals and Quantum Dots
Session Chairs
Sumit Chaudhary
Svetlana Kilina
Garry Rumbles
Thursday PM, December 01, 2011
Liberty (Sheraton)

2:30 PM - **I9.1
Dynamics of Excitons and Charges in Organic Materials and Semiconductor Quantum Dots.

Laurens Siebbeles 1
1 , Delft University of Technology, Delft Netherlands

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3:00 PM - I9.2
Exciton Recombination in Ternary Blends of Organic Semiconductors and near-Infrared Quantum-Dots.

Grigorios Itskos 1 , Andreas Othonos 1 , Tobias Rauch 2 , Sandro Tedde 2 , Oliver Hayden 2 , Maksym Kovalenko 3 , Wolfgang Heiss 3 , Stelios Choulis 4
1 Physics Department, University of Cyprus, Nicosia Cyprus, 2 , Siemens AG, Corporate Technology, Erlangen Germany, 3 Institute of Semiconductor and Solid State Physics, University of Linz, Linz Austria, 4 Department of Mechanical Engineering and Materials Science and Engineering, Cyprus University of Technology, Limassol Cyprus

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3:15 PM - I9.3
Solar Cells Using Quantum Funnels.

Illan Kramer 1 , Larissa Levina 1 , Ratan Debnath 1 , David Zhitomirsky 1 , Edward Sargent 1
1 Electrical & Computer Engineering, University of Toronto, Toronto, Ontario, Canada

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3:30 PM - **I9.4
Wave Function Engineering in Core/Shell Quantum Dots for Efficient Single and Multiexciton Dissociation.

Tianquan Lian 1
1 Dept. of Chemistry, Emory University, Atlanta, Georgia, United States

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4:00 PM - *
Coffee Break

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4:30 PM - I9.5
Neutron Scattering Provides a New Model for Optimal Morphologies in Organic Photovoltaics: Rivers and Streams.

Wen Yin 1 , Nathan Henry 1 , Kai Xaio 2 , John Ankner 2 , Mark Dadmun 1 2
1 , University of Tennessee, Knoxville, Tennessee, United States, 2 , Oak Ridge National Laboratory, Oak Ridge, Tennessee, United States

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4:45 PM - **I9.6
Exploring Interfacial Dynamics in Colloidal Nanocrystals.

Marcus Jones 1 , Kevin Major 1 , Gaurav Singh 1 , Danielle Woodall 1 , Edward Williams 1
1 Chemistry, University of North Carolina at Charlotte, Charlotte, North Carolina, United States

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5:15 PM - I9.7
Light Energy Conversion by Mesoscopic PbS Quantum Dots /TiO2 Heterojunction Solar Cells.

Lioz Etgar 1 , Thomas Moehl 1 , Stefanie Tscharntke 2 , Stephen Hickey 2 , Alexander Eychmuelerand 2 , Michael Grätzel 1
1 Laboratory of photonics and interfaces, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne Switzerland, 2 Physical Chemistry/Electrochemistry, TU Dresden, Dresden Germany

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I10: Poster Session
Session Chairs
Venkat Bommisetty
Vladimir Dyakonov
Mario Leclerc
Garry Rumbles
NiyaziSerdar Sariciftci
Friday AM, December 02, 2011
Exhibition Hall C (Hynes)

9:00 PM - I10.10
Selective Deposition of CdSe Nanoparticles on Reduced Graphene Oxide to Understand Photoinduced Charge Transfer in Hybrid Nanostructures.

Kehan Yu 1 , Ganhu Lu 1 , Shun Mao 1 , Kehung Chen 1 , Haejune Kim 1 , Zhenhai Wen 1 , Junhong Chen 1
1 Mechanical Engineering, University of Wisconsin – Milwaukee, Milwaukee, Wisconsin, United States

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9:00 PM - I10.11
Effect of Cu-In-Ga Precursor Deposited at Different Temperature for CIGS Absorption Layer.

Jae-kwan Sim 1 , Yong-Ho Ra 1 , Ji-hyeon Park 1 , Bo-ra Yeom 1 , Ashok Karunanithi 1 , Cheul-Ro Lee 1
1 Semiconductor Materials Processing Laboratory, Chonbuk national university, Jeonju Korea (the Republic of)

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9:00 PM - I10.12
Redox-Active Radical Molecules for Organic Photovoltaic Devices.

Fumiaki Kato 1 , Takumi Okuyama 1 , Ken Muraoka 1 , Akitomo Kikuchi 1 , Takakazu Saito 1 , Chihiro Hayashi 1 , Kenichi Oyaizu 1 , Hiroyuki Nishide 1
1 Applied Chemistry, Waseda Unviersity, Tokyo Japan

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9:00 PM - I10.13
External Electric Field and Post-Annealing Induced Enhanced Efficiency in P3HT/PCBM Bulk Heterojunction Solar Cells.

Mukesh Kumar 1 , Chong Chen 1 , Pavel Dutta 1 , Venkat Bommisetty 1
1 Electrical Engineering, South Dakota State University, Brookings, South Dakota, United States

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9:00 PM - I10.14
Optimizing Charge Transfer Processes between Luminescent Polymers and TiO2 Nanoparticles.

Gustavo Valente 1 , Angelo Faceto 1 , Francisco Gontijo Guimaraes 1
1 , University of São Paulo, São Carlos, SP, Brazil

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9:00 PM - I10.15
Exciton Diffusion in PbS Quantum Dot Thin Films.

David Strasfeld 1 , Gautham Nair 2 , Scott Geyer 3 , Liang-Yi Chang 1 , Moungi Bawendi 1
1 Chemistry, Massachusetts Institute of Technology, Cambridge, MA, Massachusetts, United States, 2 Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania, United States, 3 Physics, Stanford University, Palo Alto, California, United States

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9:00 PM - I10.16
Conjugated Starburst Macromolecules for Optoelectronic Applications.

Feng Liu 1 2 3 , Chao Tang 1 , Hongbin Wu 2 , Wei Wei 1 , Wei Huang 1
1 Institute of Advanced Materials (IAM), Nanjing University of Posts and Telecommunications, nanjin, 0, China, 2 Institute of Polymer Optoelectronic Materials and Devices, South China University of Technology, Guangzhou, 0, China, 3 Polymer Science and Engineering, University of Massachusetts Amherst, Amherst, Massachusetts, United States

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9:00 PM - I10.17
The Organic/Inorganic Heterojunction as Model for Excitonic Solar Cells.

Pabitra Nayak 1 , Lee Barnea Nehoshtan 1 , Antoine Kahn 2 , David Cahen 1
1 , Weizmann Institute of Science, Rehovot Israel, 2 , Princeton University, Princeton, New Jersey, United States

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9:00 PM - I10.18
Direct near–Field Optical Imaging of P3HT Nanostructures.

Mina Baghgar 1 , Sibel Yalcin 2 , Joelle Labastide 2 , Irene Dujovne 2 , Kevin Early 3 , Harihara Venkatraman 2 , Yipeng Yang 1 , Michael Barnes 1 2 , Dhandapani Venkataraman 2 , Anthony Dinsmor 1
1 Physics, University of Massachusetts Amherst, Amherst, Massachusetts, United States, 2 Chemistry, University of Massachusetts Amherst, Amherst, Massachusetts, United States, 3 JILA, University of Colorado Boulder, Boulder, Colorado, United States

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9:00 PM - I10.19
Size and Internal Structure Dependent Photoluminescence in Semicrystalline Polythiophene (P3HT) Nanoparticles.

Joelle Labastide 1 , Mina Baghgar 2 , Irene Dujovne 1 , Harihara Venkatraman 1 , David Ramsdell 1 , Dhandapani Venkataraman 1 , Michael Barnes 1 2
1 Chemistry, University of Massachusetts Amherst, amherst, Massachusetts, United States, 2 Physics, University of Massachusetts Amherst, Amherst, Massachusetts, United States

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9:00 PM - I10.2
Controlling Charge Transfer in Hybrid Organic/Nanocrystals Semiconductor Blends.

Neha Bansal 1 , Saif Haque 1
1 , Imperial College London, London United Kingdom

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9:00 PM - I10.20
Efficient Multi-Electron Transfer from Multi-Exciton States in Singlet Fission.

Wai-Lun Chan 1 , Manuel Ligges 1 , Askat Jailaubekov 1 , Xiaoyang Zhu 1
1 Department of Chemistry and Biochemistry, University of Texas at Austin, Austin, Texas, United States

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9:00 PM - I10.21
Optimization of Carrier-Multiplication for More Efficient Solar Cells: The Case of α-Sn Quantum Dots.

Christophe Delerue 1 , Guy Allan 1
1 , IEMN - ISEN, Lille Cedex France

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9:00 PM - I10.23
Study of Multi-Excitons in Silicon Clusters for Efficient Solar Cell.

Yi He 1 , Taofang Zeng 1
1 , M. I. T. , Cambridge, Massachusetts, United States

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9:00 PM - I10.24
The Role of Optical Waveguiding on Triplet Exciton Transport in Tetracene and Rubrene Crystals.

Jiye Lee 1 , Carlijn Mulder 1 , Hiroshi Mendoza 1 , Marc Baldo 1
1 Electrical Engineering and Computer Science, MIT, Cambridge, Massachusetts, United States

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9:00 PM - I10.26
Perturbing Excited-State Dynamics Using Nanoplasmonic Substrates.

Andrew Ferguson 1 , Natalia Azarova 3 1 , Ross Larsen 2 , Christopher Chang 2 , Jao van de Lagemaat 1 , Won Park 3 , Justin Johnson 1
1 Chemical & Materials Science Center, NREL, Golden, Colorado, United States, 3 Department of Electrical & Computer Engineering, University of Colorado at Boulder, Boulder, Colorado, United States, 2 Computational Science Center, NREL, Golden, Colorado, United States

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9:00 PM - I10.28
Fullerene Crystallisation as a Key Driver of Charge Separation in Polymer/Fullerene Bulk Heterojunction Solar Cells.

Fiona Jamieson 1 , Ester Buchaca Domingo 2 , Thomas McCarthy-Ward 1 , Martin Heeney 1 , Natalie Stingelin 2 , James Durrant 1
1 Chemistry, Imperial College London, London United Kingdom, 2 Materials, Imperial College London, London United Kingdom

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9:00 PM - I10.29
Hierarchical Data Mining to Link BHJ Structure with Properties of Organic Solar Cells.

Olga Wodo 1 , Hari Kodali 1 , Baskar Ganapathysubramanian 1 2
1 Mechanical Engineering Department, Iowa State Univeristy, Ames, Iowa, United States, 2 Electrical and Computer Engineering Department, Iowa State University, Ames, Iowa, United States

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9:00 PM - I10.3
Efficient Organic Solar Cells Based on Aromatic Spacer Bridged Diketopyrrolopyrrole Derivatives.

Yoon-suk Choi 1 , Yoonkyoo Lee 1 , Wonho Jo 1
1 , Seoul National University, Seoul Korea (the Republic of)

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9:00 PM - I10.30
Carrier Transport Behavior in Single Crystalline Rutile Nanorod Based Excitonic Solar Cell.

Mengjin Yang 1 , Ding Bo 1 , Jung-Kun Lee 1
1 Mech. Eng. & Mater. Sci., University of Pittsburgh, Pittsburgh, Pennsylvania, United States

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9:00 PM - I10.31
Low Bandgap Polymer Tailored for High Performance Tandem Polymer Solar Cells.

Letian Dou 1 , Jingbi You 1 , Yang Yang 1
1 Materials Science, University of California, Los Angeles, Los Angeles, California, United States

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9:00 PM - I10.32
Charge Carrier Generation and Transport in Hybrid P3HT/Silicon Nanocrystal Solar Cells.

Sabrina Niesar 1 , Daniel Herrmann 2 , Rui Pereira 3 , Wolfgang Fabian 1 , Christina Scharsich 4 , Anna Koehler 4 , Hartmut Wiggers 5 , Martin Brandt 1 , Eberhard Riedle 2 , Martin Stutzmann 1
1 Walter Schottky Institut, Technische Universität München, Garching Germany, 2 Lehrstuhl für BioMolekulare Optik, Ludwig-Maximilians-Universität, München Germany, 3 Department of Physics and I3N, University of Aveiro, Aveiro Portugal, 4 Lehrstuhl Experimentalphysik II, Universität Bayreuth, Bayreuth Germany, 5 Institut für Verbrennung und Gasdynamik und CeNIDE, Universität Duisburg-Essen, Duisburg Germany

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9:00 PM - I10.36
Making Molecular Multilayers Using ``Click" Chemistry: Growth, Characterization, and Applications in p-Type Dye-Sensitized Solar Cells.

Peter K.B. Palomaki 1 2 , Peter Dinolfo 1 2
1 Chemistry and Chemical Biology, Rensselaer Polytechnic Institute, Troy, New York, United States, 2 Rensselaer Polytechnic Institute, Baruch ‘60 Center for Biochemical Solar Energy Research, Troy, New York, United States

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9:00 PM - I10.37
Study of Interfacial Processes in Dye Sensitized Solar Cells (DSSC) via Thin Film Approach: Effect of Oxygen Vacancy Concentration.

Onkar Game 1 , Vishal Thakare 2 , Abhimanyu Rana 2 , Satishchandra Ogale 2
1 , University of Pune, Pune India, 2 Physical and Materials Chemistry Division, National Chemical Laboratory, Pune India

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