2018 MRS Spring Meeting

Call for Papers

Symposium EP05—Emerging Light-Emitting Materials and DevicesHalide Perovskite and Low-Dimensional Nanoscale Emitters

Devices that emit light have led to revolutionary advancement in the fields of the lighting, display, optical sensing and communication. Major research goals of light emitting materials have been targeted toward achievement of high luminescent efficiency and long device lifetime. Devices based on inorganic and organic emitters have been successfully commercialized and both exhibit distinct advantages in different applications (e.g. stability, flexibility in wavelength, color purity, large-area processing, etc.). New classes of light emitters such as inorganic, carbon, and halide perovskite light-emitters in forms of nanocrystals, nanoscale dots/wire/sheet, amorphous films, and polycrystal films are emerging for application in displays, lightings, lasers, and other optoelectronics beyond solar cells.

Recently, metal halide perovskites have emerged as a new class of light emitters. Combining the advantages of organic and inorganic emitters, perovskites have shown the potential for low-cost, wavelength-tunable, and high-color purity light-emitting diodes (LEDs). Since the first demonstration of bright room temperature emission from perovskiteLEDs in 2014, rapid progress has been made on the photophysics of halide perovskites such as the exciton lifetime, charge carrier traps, and luminescent quenching. The fundamental understanding has led to remarkable improvement on device performance including the brightness, the quantum efficiency, and the stability during extended operation. Moreover, the development of light-emitting perovskites also benefits from the emergence of low-dimensional crystals with various morphology produced using newly developed synthetic schemes. While the underlying mechanisms of radiative recombination are still debatable, more experimental evidences collectively indicate that confining charge carriers in small crystallites, such as nanocrystals, nanowires, nano-sheets and films with nanocrystalline grains, is a very effective means to overcome the problems of large exciton diffusion lengths and significant exciton dissociation. Furthermore, carbon or inorganic low-dimensional materials in the form of quantum dots, nanowires, and nanosheets are also emerging for display and lighting applications.

This symposium will be dedicated to the synthesis, photophysics and devices of emerging light emitting materials. While reports on metal halide perovskites will be particularly encouraged, outstanding achievements from the most recently research in other carbon and inorganic nanoscale materials will also be the topics in two sessions. Besides electroluminescence, materials for down-conversion emission and stimulated emission (laser) will also be covered. Subjects to be discussed in this symposium will span from fundamental material development including the synthesis and characterization of the materials, to practical device demonstration concerning engineering and optimization of device performance.

The symposium will deliver multidisciplinary topics related to chemistry, physics, materials science and engineering of the emerging light emitters. Active, renowned researchers in relevant fields will be invited to present in order to enhance the impact of the discussions and encourage the attendance of the symposium.

Topics will include:

  • Emerging carbon,inorganic organic-inorganic hybrid and halide perovskite emitters
  • Nanowire, quantum dot, 2D materials and point defect emitters
  • Photophysics (excitation, recombination, photo- and electroluminescence) of emitters
  • Scalable processing of emitters
  • New device architecture for light-emitting diodes
  • Charge transport layers and interfacial effects in light-emitting diodes
  • Down-conversion emitters and devices
  • Lasing from micro- and nanoscale materials
  • Materials emitting out of the visible wavelengths (deep UV, near-infrared)
  • Other optoelectronic devices for light emitting applications

Invited Speakers:

  • Alexander Efros (U.S. Naval Research Laboratory, USA)
  • Neil C. Greenhan (University of Cambridge, United Kingdom)
  • Tzung-Fang Guo (National Cheng Kung University, Taiwan)
  • Subodh Hhaisalkar (Nanyang Technological University, Singapore)
  • Bin Hu (University of Tennesse, USA)
  • S. Jin (University of Wisconsin-Madison, USA)
  • Hemamala Karunadasa (Stanford University, USA)
  • Viktor Klimov (Los Alamos National Laboratory, USA)
  • Maria Antonieta Loi (University of Groningen, Netherlands)
  • Biwu Ma (Florida State University, USA)
  • Aditya D. Mohite (Rice University, USA)
  • Gabriele Raino (IBM Ruschlikon, Switzerland)
  • Barry Rand (Princeton University, USA)
  • Myoung Hoon Song (Ulsan National Institute of Science and Technology, Republic of Korea)
  • Tze Chien Sum (Nanyang Technical University, Singapore)
  • Zhi Kuang Tan (National University of Singapore, Singapore)
  • William A. Tisdale (Massachusetts Institute of Technology, USA)
  • Qihua Xiong (Nanyang Technological University, Singapore)
  • Jiangeng Xue (University of Florida, USA)
  • Peidong Yang (University of California, Berkeley, USA)
  • Yang Yang (University of California, Los Angeles, USA)
  • Jingbi You (Chinese Academy of Sciences, China)
  • X-Y. Zhu (Columbia University, USA)

Symposium Organizers

Hanwei Gao
Florida State University
Department of Physics
850-645-1297, h-gao@physics.fsu.edu

Dong Ha Kim
Ewha Womans University
Department of Chemistry and Nanoscience
Republic of Korea
82-2-3277-4517, dhkim@ewha.ac.kr

Maksym V. Kovalenko
ETH Zurich
Department of Chemistry and Applied Biosciences
41-044-633-4156, mvkovalenko@ethz.ch

Keywords for Abstract Submission

Display and Lighting, Down-Conversion Emitters, Halide Perovskite, Lasers, Light Emitting Diodes, Low-dimensional Nanoscale Emitters, Quantum Dots