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Remote heteroepitaxy of GaN microrod heterostructures for deformable light-emitting diodes and wafer recycle

Title
Remote heteroepitaxy of GaN microrod heterostructures for deformable light-emitting diodes and wafer recycle
Authors
Jeong, JunseokWang, QingxiaoCha, JanghwanJin, Dae KwonShin, Dong HoonKwon, SunahKang, Bong KyunJang, Jun HyukYang, Woo SeokChoi, Yong SeokYoo, JinkyoungKim, Jong KyuLee, Chul-HoLee, SangwookZakhidov, Anvar A.Hong, SuklyunKim, Moon J.Hong, Young Joon
Ewha Authors
이상욱신동훈
SCOPUS Author ID
이상욱scopus; 신동훈scopus
Issue Date
2020
Journal Title
SCIENCE ADVANCES
ISSN
2375-2548JCR Link
Citation
SCIENCE ADVANCES vol. 6, no. 23
Publisher
AMER ASSOC ADVANCEMENT SCIENCE
Indexed
SCIE; SCOPUS WOS
Document Type
Article
Abstract
There have been rapidly increasing demands for flexible lighting apparatus, and micrometer-scale light-emitting diodes (LEDs) are regarded as one of the promising lighting sources for deformable device applications. Herein, we demonstrate a method of creating a deformable LED, based on remote heteroepitaxy of GaN microrod (MR) p-n junction arrays on c-Al2O3 wafer across graphene. The use of graphene allows the transfer of MR LED arrays onto a copper plate, and spatially separate MR arrays offer ideal device geometry suitable for deformable LED in various shapes without serious device performance degradation. Moreover, remote heteroepitaxy also allows the wafer to be reused, allowing reproducible production of MR LEDs using a single substrate without noticeable device degradation. The remote heteroepitaxial relation is determined by high-resolution scanning transmission electron microscopy, and the density functional theory simulations clarify how the remote heteroepitaxy is made possible through graphene.
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DOI
10.1126/sciadv.aaz5180
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자연과학대학 > 물리학전공 > Journal papers
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