Linearly polarized spontaneous emission from m-plane InGaN/GaN multiple-quantum-well LEDs

Nathan F. Gardner; James C. Kim; Jonathan J. Wierer; Yu-Chen Shen; Michael R. Krames

doi:10.1117/12.627959

14 September 2005 Linearly polarized spontaneous emission from m-plane InGaN/GaN multiple-quantum-well LEDs

Nathan F. Gardner, James C. Kim, Jonathan J. Wierer, Yu-Chen Shen, Michael R. Krames

Proceedings Volume 5941, Fifth International Conference on Solid State Lighting; 59410J (2005) https://doi.org/10.1117/12.627959
Event: Optics and Photonics 2005, 2005, San Diego, California, United States

Abstract

InGaN/GaN multiple-quantum-well light-emitting diodes have been fabricated on the (1010) m-plane of 4H-SiC substrates. The c-axes of the m-plane epitaxial films and the substrate are parallel. The surface of the epitaxial films has a ridged texture with the ridges aligned perpendicular to the c-axis. Xray diffraction shows superlattice features from the multiple-quantum well stack, and plan-view transmission electron microscopy shows a threading dislocation density of ~ 10¹⁰ cm^-2 and a basal plane stacking fault density of ~ 8 × 10⁶ cm^-1. The electroluminescence from the LED shows a strong polarization anisotropy with the majority of the light emitted perpendicular to the c-axis and a polarization ratio exceeding 0.8. The temperature dependence of the polarization ratio shows a 49 meV difference in energy gap between the valence band minima with different polarizations.

Citation Download Citation

Nathan F. Gardner, James C. Kim, Jonathan J. Wierer, Yu-Chen Shen, and Michael R. Krames "Linearly polarized spontaneous emission from m-plane InGaN/GaN multiple-quantum-well LEDs", Proc. SPIE 5941, Fifth International Conference on Solid State Lighting, 59410J (14 September 2005); https://doi.org/10.1117/12.627959

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available