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학술지 Sputter Deposition of Sn-doped ZnO/Ag/Sn-doped ZnO Transparent Contact Layer for GaN LED Applications
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저자
박래만, 오문식, 나윤빈, 정우석, 김현수
발행일
201610
출처
Materials Letters, v.180, pp.72-76
ISSN
0167-577X
출판사
Elsevier
DOI
https://dx.doi.org/10.1016/j.matlet.2016.05.111
협약과제
16MB1100, 미래광고 서비스를 위한 에너지절감형 환경적응 I/O (Input/Output) 플랫폼 기술 개발, 황치선
초록
Sn-doped ZnO/Ag/Sn-doped ZnO (ZAZ) multilayers prepared using sputtering process was employed in GaN-based blue light-emitting diodes(LEDs) as transparent contact layers (TCLs). The ZAZ layer had better optical and electrical properties without any thermal annealing. The ZAZ TCLs improved the current spreading on p-GaN layer and increased the light output power in the large area devices. The efficiency droop was also quite small in the case of adopting a ZAZ TCL in GaN-based LEDs. These results are promising for the development of a ZAZ TCL using sputtering process for GaN LED applications.
키워드
GaN, LED, Transparent contact layer
KSP 제안 키워드
Blue light-emitting diodes, GaN LED, GaN-based LEDs, LED applications, Light output power(Lop), Optical and electrical properties, Sn-doped ZnO, Thermal annealing, current spreading, efficiency droop, electrical properties(I-V curve)