June 20 - 22, 2012
The Penn Stater - Pennsylvania State University

The Electronic Materials Conference (EMC) is the premier annual forum on the preparation and characterization of electronic materials. EMC 2012 was held June 20 – 22, at scenic Pennsylvania State University.  The conference featured a plenary session, parallel topical sessions, a poster session and an industrial exhibition. Papers submitted by students were eligible for “Best Student Paper Awards.”

The Electronic Materials Conference was coordinated with the Device Research Conference to be held during the same week from June 18 - 20, 2012. This recognized the strong interaction between device and electronic materials research and provided for fruitful exchange of information between attendees of both conferences.


Conference Organizer 

Christian Wetzel
Rensselaer Polytechnic Institute

Program Organizer 

Andrew Allerman
Sandia National Laboratories

Plenary Speaker 

James S. Speck
University of California, Santa Barbara

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Plenary Speaker | EMC Author Index | Complete Conference Details

View Program by Day: 

Plenary Speaker


James S. Speck, EMC 2012 Plenary Speaker 

James S. Speck
Materials Department
University of California, Santa Barbara


   Nonpolar and Semipolar GaN Materials and Devices:
The Journey so Far


Devices grown on c-plane GaN suffer from large internal electric fields due to discontinuities in spontaneous and piezoelectric polarization effects which cause charge separation between holes and electrons in quantum wells and limits the radiative recombination efficiency.  Nonpolar GaN devices, such as in the m-plane (1100), are free from polarization related electric fields since the polar c-axis is parallel to any heterointerfaces.  Semipolar GaN-based devices have reduced electric fields and in some cases, such as (2021), show a high propensity for Indium update for InGaN quantum wells.

In this talk, we present work on outstanding materials and device opportunities issues and opportunities including:  morphological stability with special emphasis on the role of substrate orientation and growth conditions [1,2,3]; the development of pseudomorphoric InGaN and AlGaN semipolar buffer layers via dislocation strain relaxation [4,5,6,]; blue (1122) LDs in relaxed buffer layers [7]; green LEDs on relaxed buffer layers [8]; new detailed atom probe analysis of high performance GaN-based LEDs and laser diodes [9].  Additionally, we update progress on nonpolar electron devices and nonpolar and semipolar LEDs and LDs including the achievement of high performance true blue (? >450 nm) and true green (? >515 nm) lasers on m-plane and semipolar (namely, (2021)) GaN substrates [10,11].  Finally, we will present recent work on polarized light emission from m-plane LEDs [12] and demonstrate the first photonic crystal nonpolar LEDs [13].

[1]  R.M. Farrell et al J. Cryst. Growth313, 1 (2010)
[2]  R.M. Farrell et al Appl. Phys. Lett. 96, 231113 (2010)
[3]  B. Bryant et al submitted for publication (2012)
[4]  F. Wu et al J. Appl. Phys. 109, 033505 (2011)
[5]  A.E. Romanov et al, J. Appl. Phys. 109, 103522(2011)
[6]  E.C. Young et al. Appl. Phys. Express, 4, 061001 (2011)
[7]  P.S. Hsu et al. Appl. Phys. Lett. 100, 021104 (2012)
[8]  I. Koslow et al. submitted for publication (2012)
[9]  T. Prosa et al. Appl. Phys. Lett. 98, 191903 (2011)
[10]  K.M. Kelchner et al Appl. Phys. Express3, 092103(2010)
[11]  Y.D. Lin et al. Appl. Phys. Express3, 082001 (2010)
[12]  S.E. Brinkley et al. Appl. Phys. Lett. 98, 011110 (2011)
[13]  E. Matioli et al. Appl. Phys. Lett. 98, 251112 (2011)  

 The three day conference featured oral and poster presentations covering:  

Energy Conversion & Storage Materials  

  • Photovoltaics—Organic and Hybrid
  • Next-Generation Solar Cell Materials and Devices
  • Thermoelectrics and Thermionics
  • Ionic Conductors for Solid-Oxide Fuel Cells and Batteries
  • Highly Mismatched Dilute Alloys

Wide Bandgap Materials  

  • Group-III Nitrides—Growth, Processing, Characterization, Theory and Devices
  • Silicon Carbide—Growth, Processing, Characterization, Theory and Devices
  • Indium Nitride—Growth, Processing, Characterization, Theory and Devices
  • Oxide Semiconductors—Growth, Doping, Defects,  Nanostructures and Devices
  • Point Defects, Doping and Extended Defects Enabling Technologies

Enabling Technologies 

  • Metamaterials
  • Materials for THz, Plasmonics and Polaritons
  • Flexible and Printed Thin-Film Electronics
  • Organic Thin-Film and Crystalline Transistors—Devices, Materials and Processing
  • Nano-Magnetic, Magnetic Memory and Spintronic Materials
  • Contacts to Semiconductor Epilayers, Nanowires, Nanotubes and Organic Films
  • Epitaxial Materials and Devices
  • Narrow Bandgap Materials and Devices
  • Embedded Nanoparticles and Rare-Earth Materials in III-V Semiconductors
  • Dilute Nitride Semiconductors
  • Nondestructive Testing and In-Situ Monitoring and Control
  • Semiconductor Processing—Oxidation, Passivation, and Etching
  • Materials Integration—Wafer Bonding and Engineered Substrates
  • Oxide Thin-Film Integration—Alternative Dielectrics, Epitaxial Oxides, Multifunctional Oxides, Superlattices and Metal Gates
  • Compound Semiconductor Growth on Si Substrates and Si-Based Heterojunctions
  • Biomaterials and Interfaces

Nanoscale Science and Technology in Materials 

  • Graphene and Carbon Nanotubes
  • Low-Dimensional Structures—Quantum Dots, Wires and Wells
  • Nanotubes and Nanowires
  • Nanoscale Characterization—Scanning Probes, Electron Microscopy and Other Techniques
  • Molecular Electronics—Devices, Materials and Sensors 

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Electronic Materials Conference 2012 Exhibitors


The Penn Stater Conference Center Hotel
Pennsylvania State University
215 Innovation Blvd.
State College, PA 16803, USA
1-800-233-7505 (Reference ID: EMCF12A)

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The Penn Stater Conference Center Hotel

215 Innovation Boulevard
State College, PA 16803
1-800-233-7505 or 814-863-5050

Pennsylvania State University (PSU) is consistently ranked one of the leading universities for materials science and engineering by the National Science Foundation, making it an ideal conference location. Still, there is so much to do at PSU, it can be a delightful vacation destination. The campus is nestled among the beautiful Pennsylvania countryside, and is rich with trails to explore. 

Whether it’s hiking, dirt bike riding, cycling, ATVing or just leisurely walking, Penn State has something for everyone. Enjoy the family-friendly atmosphere with arts festivals, fine boutiques and historic sites. Take a trip to the famous Penn State Creamery, the largest university creamery in the U.S., for one of their 100 flavors of ice cream.

From sightseeting to action-packed adventures, you won’t want to miss a moment. After all, it’s not called the “Happy Valley” for nothing!



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Symposium Organizers | EMC Members

Symposium Organizers

Energy Conversion & Storage Materials 

Photovoltaics: Organic and Hybrid 

Next Generation Solar Cell Materials and Devices 

Thermoelectrics and Thermionics  

Ionic Conductors for Solid Oxide Fuel Cells and Batteries 

Highly Mismatched Dilute Alloys 

Wide Bandgap Materials 

Group III-Nitrides: Growth, Processing, Characterization, Theory and Devices 

Silicon Carbide: Growth, Processing, Characterization, Theory and Devices 

Indium Nitride: Growth, Processing, Characterization, Theory and Devices 

Oxide Semiconductors: Growth, Doping, Defects, Nanostructures and Devices 

Point Defects, Doping and Extended Defects 

Enabling Technologies 


Materials for THz, Plasmonics and Polaritons 

Flexible and Printed Thin Film Electronics 

Organic Thin Film and Crystalline Transistors: Devices, Materials and Processing 

Nano-Magnetic, Magnetic Memory and Spintronic Materials 

Contacts to Semiconductor Epilayers, Nanowires, Nanotubes and Organic Films 

Epitaxial Materials and Devices 

Narrow Bandgap Materials and Devices 

Embedded Nanoparticles and Rare-Earth-Materials in III-V Semiconductors 

Dilute Nitride Semiconductors 

Nondestructive Testing and In Situ Monitoring and Control  

Semiconductor Processing: Oxidation, Passivation, and Etching 

Materials Integration: Wafer Bonding and Engineered Substrates 

Oxide Thin Film Integration: Alternative Dielectrics, Epitaxial Oxides, Multifunctional Oxides, Superlattices, and Metal Gates 

Compound Semiconductor Growth on Si Substrates and Si-Based Heterojunctions  

Bio-Materials and Interfaces 


Nanoscale Science and Technology in Materials 

Graphene and Carbon Nanotubes  

Low-Dimensional Structures: Quantum Dots, Wires and Wells 

Nanotubes and Nanowires  

Nanoscale Characterization: Scanning Probes, Electron Microscopy and Other Techniques 

Molecular Electronics: Devices, Materials and Sensors 


EMC Members and Organizers


Christian Wetzel, Rensselaer Polytechnic Institute Chair
Andrew Allerman, Sandia National Laboratory Vice Chair
Jamie Phillips, University of Michigan Secretary
David Janes, Purdue University Treasurer

Ex-Officio Members  

Ted Harman, MIT Lincoln Laboratory Past Editor-JEM
Suzanne Mohney, Penn State University Editor-JEM
Zi-Kui Liu, Penn State University Chair EMPMD
Mark Goorsky, UCLA Past-Chair

Members at Large  

Bob Biefeld, Sandia National Laboratory
Ed Yu, University of Texas at Austin
Ralph Dawson, University of New Mexico
Jim Merz, University of Notre Dame
Tim Sands, Purdue University
Akio Sasaki, Kyoto University
Jerry Woodall, Purdue University


Seth Bank, University of Texas at Austin 
Len Brillson, Ohio State University 
Mike Capano, Purdue University 
Alan Doolittle, Georgia Institute of Technology 
Russ Dupuis, Georgia Institute of Technology 
Randall Feenstra, Carnegie Mellon University 
Michael Flatte, University of Iowa 
Doug Hall, University of Notre Dame 
Tom Jackson, Penn State University 
Debdeep Jena, University of Notre Dame 
Kei-May Lau, Hong Kong Univ. Sci. & Tech. 
Pat Lenahan, Penn State University 
Mike Manfra, Purdue University 
Pete Moran, Michigan Technical University 
Lisa Porter, Carnegie Mellon University 
Joan Redwing, Penn State University 
Steve Ringel, Ohio State University 
Alberto Salleo, Stanford University 
Mike Spencer, Cornell University 
Robert Stahlbush Naval Research Laboratory 
Alec Talin, NIST 
Huili (Grace) Xing, University of Notre Dame 
Charles Tu, UCSD 
William Wong, University of Waterloo 

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Travel Resources

By air: The State College/University Park Airport (airport code: SCE) is located near the conference site. Call 814-865-5511 or visit www.universityparkairport.com for information on flights.  

By car: The University Park campus is located within driving distance of many major cities, including:

  • Harrisburg (1.5 hrs., 90 mi.)
  • Pittsburgh (3 hrs., 137 mi.)
  • Philadelphia (3.5 hrs., 194 mi.)
  • Baltimore (3.5 hrs., 155 mi.)
  • Washington D.C. (4 hrs., 190 mi.)
  • New York City (5 hrs., 250 mi.)
  • Toronto (6.5 hrs., 304 mi.).

By bus: The following companies provide bus service between major cities to State College, Pennsylvania:


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