Comprehensive study of internal quantum efficiency of high-brightness GaN-based light-emitting diodes by temperature-dependent electroluminescence method

Yaqi Wang; Mengshu Pan; Ting Li

doi:10.1117/12.2040710

27 February 2014 Comprehensive study of internal quantum efficiency of high-brightness GaN-based light-emitting diodes by temperature-dependent electroluminescence method

Yaqi Wang, Mengshu Pan, Ting Li

Author Affiliations +

Proceedings Volume 9003, Light-Emitting Diodes: Materials, Devices, and Applications for Solid State Lighting XVIII; 90030D (2014) https://doi.org/10.1117/12.2040710
Event: SPIE OPTO, 2014, San Francisco, California, United States

Abstract

We report on the development of a temperature-dependent electroluminescence experimental setup for characterizing the internal quantum efficiency (IQE) of high-brightness GaN-based light-emitting diodes (LEDs). A systematic IQE study of commercial LED chips from major LED manufacturers (including Cree, Nichia, Osram, and Sanan) is presented. The chips show distinctive temperature- and current-dependence in the IQE behavior. Analysis to correlate the onset of droop with the onset of high injection is also presented.

Citation Download Citation

Yaqi Wang, Mengshu Pan, and Ting Li "Comprehensive study of internal quantum efficiency of high-brightness GaN-based light-emitting diodes by temperature-dependent electroluminescence method", Proc. SPIE 9003, Light-Emitting Diodes: Materials, Devices, and Applications for Solid State Lighting XVIII, 90030D (27 February 2014); https://doi.org/10.1117/12.2040710

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