download0 view148
twitter facebook

공공누리This item is licensed Korea Open Government License

Title
Optical and microstructural properties of InGaN/GaN multiple quantum wells with embedded graphene coating
Author(s)
최재경권순용
Publication Year
2017-08-01
Abstract
We investigate the effects of embedded graphene coating on the optical and microstructural properties of ultrathin InGaN/GaN multiple quantum wells (MQWs).The InGaN/GaN MQWs grown on graphene-buffered GaN templates displayed enhanced internal quantum efficiency compared to conventional ones and showedthe internal electric field effect-free characteristic, desirable for general lighting applications. These phenomena were attributed to the enhancement of potentialfluctuation with increased indium content and negligible piezoelectric polarization in ultrathin InGaN QWs, respectively. It was found that the atomically roughsurface of GaN induced by embedded graphene coating efficiently relieved the biaxial compressive strain in the ultrathin InGaN/GaN QWs and enhancedthe In incorporation efficiency during the InGaN growth, suggesting the potential use of atomic-thick carbon layer in niche optoelectronic applications.
Keyword
Nitride materials; Crystal growth; Coating materials; Nanostructured materials; Graphene
Journal Title
Journal of Alloys and Compounds
Citation Volume
713
ISSN
0925-8388
Files in This Item:
There are no files associated with this item.
Appears in Collections:
7. KISTI 연구성과 > 학술지 발표논문
URI
https://repository.kisti.re.kr/handle/10580/14712
http://www.ndsl.kr/ndsl/search/detail/article/articleSearchResultDetail.do?cn=NART77833356
Export
RIS (EndNote)
XLS (Excel)
XML

Browse