Optical Properties of ZnO Soccer-Ball Structures Grown by Vapor Phase Transport

Title
Optical Properties of ZnO Soccer-Ball Structures Grown by Vapor Phase Transport
Author(s)
정재학이상헌[이상헌]김민수 [김민수 ]김도엽[김도엽]임광국[임광국]이동율[이동율]김진수[김진수]김종수손정식[손정식]김성오[김성오]임재영[임재영]남기웅[남기웅]김소람[김소람]
Keywords
MOLECULAR-BEAM EPITAXY; QUANTUM-WELLS; ZINC-OXIDE; THIN-FILMS; CVD METHOD; PHOTOLUMINESCENCE; NANOSTRUCTURES; TEMPERATURE; DEPOSITION; GAN
Issue Date
201201
Publisher
JAPAN SOC APPLIED PHYSICS
Citation
JAPANESE JOURNAL OF APPLIED PHYSICS, v.51, no.2
Abstract
ZnO soccer balls were grown on an Au-catalyzed Si(100) substrate by vapor phase transport (VPT) with a mixture of zinc oxide and graphite powders. Temperature-dependent PL was carried out to investigate the mechanism governing the quenching behavior of the PL spectra. From the PL spectra of the ZnO soccer balls at 10 K, several PL peaks were observed at 3.365, 3.318, 3.249, and 3.183 eV corresponding to excitons bound to neutral donors ((DX)-X-o), a donor-acceptor pair (DAP), first-order longitudinal optical phonon replica of donor-acceptor pair (DAP-1LO), and DAP-2LO, respectively. The mixed system composed of the free exciton (FX) and (DX)-X-o and the DAP radiative lifetimes were estimated with a theoretical relation between the lifetime and the spectral width. The exciton radiative lifetimes were observed to increase linearly with temperature. (C) 2012 The Japan Society of Applied Physics
URI
http://hdl.handle.net/YU.REPOSITORY/30027http://dx.doi.org/10.1143/JJAP.51.021102
ISSN
0021-4922
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공과대학 > 화학공학부 > Articles
이과대학 > 물리학과 > Articles
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