Enhanced light output of GaN-based thin-film flip-chip light-emitting diodes by surface texturing using laser ablation and chemical etching

Tseng Hsing Lin, Shui Jinn Wang, Yung Chun Tu, Chien Hsiung Hung, Zong Sian You, Yu Hsueh Chin

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

A surface texturing scheme using ablation etching by KrF excimer laser irradiation and chemical wet etching is demonstrated to improve the light-extraction efficiency of GaN-based thin-film flip-chip light-emitting diodes (TFFC-LED). Both simulated and experimental results on the light emission characteristics are presented and discussed. For the TFFC-LED (die size of 1×1 mm2) with the proposed surface roughening scheme, enhancements in light output power (LOP) by 13.08% (12.81%) and wall-plug efficiency (WPE) by 2.87% (2.25%) at 350 mA (700 mA) as compared with that of the TFFC-LED without surface texturing are achieved experimentally.

Original languageEnglish
Title of host publication73rd Annual Device Research Conference, DRC 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages123-124
Number of pages2
ISBN (Electronic)9781467381345
DOIs
Publication statusPublished - 2015 Aug 3
Event73rd Annual Device Research Conference, DRC 2015 - Columbus, United States
Duration: 2015 Jun 212015 Jun 24

Publication series

NameDevice Research Conference - Conference Digest, DRC
Volume2015-August
ISSN (Print)1548-3770

Other

Other73rd Annual Device Research Conference, DRC 2015
Country/TerritoryUnited States
CityColumbus
Period15-06-2115-06-24

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

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