Polarization-free GaN emitters in the ultraviolet and visible spectra via heterointegration on CMOS-compatible Si (100)

Can Bayram, J. Ott, K. T. Shiu, C. W. Cheng, Y. Zhu, J. Kim, D. K. Sadana, M. Razeghi

Research output: Chapter in Book/Report/Conference proceedingConference contribution


This work presents a new type of polarization-free GaN emitter. The unique aspect of this work is that the ultraviolet and visible emission originates from the cubic phase GaN and the cubic phase InGaN/GaN multi-quantum-wells, respectively. Conventionally, GaN emitters (e.g. light emitting diodes, laser diodes) are wurtzite phase thus strong polarization fields exist across the structure contributing to the droop behavior - a phenomenon defined as the reduction in emitter efficiency as injection current increases. The elimination of piezoelectric fields in GaN-based emitters as proposed in this work provide the potential for achieving a 100% internal efficiency and might lead to droopfree light emitting diodes. In addition, this work demonstrates co-integration of GaN emitters on cheap and scalable CMOS-compatible Si (100) substrate, which yields possibility of realizing a GaN laser diode uniquely - via forming mirrors along the naturally occurring cubic phase GaN-Si(100) cleavage planes.

Original languageEnglish (US)
Title of host publicationQuantum Sensing and Nanophotonic Devices XII
EditorsManijeh Razeghi, Eric Tournie, Gail J. Brown
ISBN (Electronic)9781628414608
StatePublished - 2015
EventQuantum Sensing and Nanophotonic Devices XII - San Francisco, United States
Duration: Feb 8 2015Feb 12 2015

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


OtherQuantum Sensing and Nanophotonic Devices XII
Country/TerritoryUnited States
CitySan Francisco


  • Gallium Nitride
  • Silicon
  • cubic
  • light emitting diode
  • polarization

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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