Green LED development in polar and non-polar growth orientation

Christian Wetzel; Mingwei Zhu; Yufeng Li; Wenting Hou; Liang Zhao; Wei Zhao; Shi You; Christoph Stark; Yong Xia; Michael DiBiccari; Theeradetch Detchprohm

doi:10.1117/12.829513

18 August 2009 Green LED development in polar and non-polar growth orientation

Christian Wetzel, Mingwei Zhu, Yufeng Li, Wenting Hou, Liang Zhao, Wei Zhao, Shi You, Christoph Stark, Yong Xia, Michael DiBiccari, Theeradetch Detchprohm

Author Affiliations +

Proceedings Volume 7422, Ninth International Conference on Solid State Lighting; 742204 (2009) https://doi.org/10.1117/12.829513
Event: SPIE Optical Engineering + Applications, 2009, San Diego, California, United States

Abstract

The green spectral region provides a formidable challenge for energy efficient light emitting diodes. In metal organic vapor phase epitaxy we developed GaInN/GaN quantum well material suitable for 500 - 580 nm LEDs by rigorous defect reduction and thrive for alloy uniformity. We achieve best results in homoepitaxy on polar c-plane, and non-polar a-plane and m-plane bulk GaN. By the choice of crystal orientation, the dipole of piezoelectric polarization in the quantum wells can be optimized for highest diode efficiency. We report progress towards the goal of reduced efficiency droop at longer wavelengths.

Citation Download Citation

Christian Wetzel, Mingwei Zhu, Yufeng Li, Wenting Hou, Liang Zhao, Wei Zhao, Shi You, Christoph Stark, Yong Xia, Michael DiBiccari, and Theeradetch Detchprohm "Green LED development in polar and non-polar growth orientation", Proc. SPIE 7422, Ninth International Conference on Solid State Lighting, 742204 (18 August 2009); https://doi.org/10.1117/12.829513

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