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Proceedings Paper

Polarization-free GaN emitters in the ultraviolet and visible spectra via heterointegration on CMOS-compatible Si (100)
Author(s): C. Bayram; J. Ott; K. T. Shiu; C. W. Cheng; Y. Zhu; J. Kim; D. K. Sadana; M. Razeghi
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Paper Abstract

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.

Paper Details

Date Published: 8 February 2015
PDF: 6 pages
Proc. SPIE 9370, Quantum Sensing and Nanophotonic Devices XII, 93702F (8 February 2015); doi: 10.1117/12.2082894
Show Author Affiliations
C. Bayram, Univ. of Illinois at Urbana-Champaign (United States)
J. Ott, IBM Thomas J. Watson Research Ctr. (United States)
K. T. Shiu, IBM Thomas J. Watson Research Ctr. (United States)
C. W. Cheng, IBM Thomas J. Watson Research Ctr. (United States)
Y. Zhu, IBM Thomas J. Watson Research Ctr. (United States)
J. Kim, IBM Thomas J. Watson Research Ctr. (United States)
D. K. Sadana, IBM Thomas J. Watson Research Ctr. (United States)
M. Razeghi, Northwestern Univ. (United States)


Published in SPIE Proceedings Vol. 9370:
Quantum Sensing and Nanophotonic Devices XII
Manijeh Razeghi; Eric Tournié; Gail J. Brown, Editor(s)

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