Hole transport improvement in InGaN/GaN light-emitting diodes by graded-composition multiple quantum barriers

C. H. Wang*, S. P. Chang, P. H. Ku, J. C. Li, Yu-Pin Lan, Chien-Chung Lin, H. C. Yang, Hao-Chung Kuo, Tien-chang Lu, S. C. Wang, C. Y. Chang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

116 Scopus citations

Abstract

Graded-composition multiple quantum barriers (GQB) were designed and incorporated in c-plane InGaN/GaN light-emitting diodes (LEDs) grown on c-plane sapphire substrate to improve hole transport and efficiency droop. The simulation of GQB LED design predicts enhancement of the hole transport in the active region at both low and high current densities. The fabricated LED with GQB structure exhibits lower series resistance and substantially reduced droop behavior of only 6 in comparison with 34 for conventional LED, supporting the improvement of hole transport in our design.

Original languageEnglish
Article number171106
Number of pages3
JournalApplied Physics Letters
Volume99
Issue number17
DOIs
StatePublished - 24 Oct 2011

Fingerprint Dive into the research topics of 'Hole transport improvement in InGaN/GaN light-emitting diodes by graded-composition multiple quantum barriers'. Together they form a unique fingerprint.

Cite this