Efficiency and droop improvement in InGaN/GaN lightemitting diodes by selectively carrier-distribution manipulation

Da Wei Lin, Chao Hsun Wang, Shih Pang Chang, Pu Hsih Ku, Yu-Pin Lan, Hao-Chung Kuo*, Tien-chang Lu, Shing Chung Wang, Chun Yen Chang

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Efficiency and droop behavior in InGaN/GaN light-emitting diodes are both improved by selectively-graded-composition multi-quantum barriers (SGQB). Simulation results show that SGQB could moderately improve the hole transport in active region. In the meantime, spatial distribution overlap between electrons and holes in active region could be also well-considered. Therefore, the radiative recombination of SGQB LED is more efficient than that of conventional LED. The overall efficiency and droop behavior are simultaneously improved in SGQB LED, at both low and high current density.

Original languageEnglish
Title of host publicationQuantum Electronics and Laser Science Conference, QELS 2012
DOIs
StatePublished - 1 Dec 2012
EventQuantum Electronics and Laser Science Conference, QELS 2012 - San Jose, CA, United States
Duration: 6 May 201211 May 2012

Publication series

NameOptics InfoBase Conference Papers
ISSN (Electronic)2162-2701

Conference

ConferenceQuantum Electronics and Laser Science Conference, QELS 2012
Country/TerritoryUnited States
CitySan Jose, CA
Period6/05/1211/05/12

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