Optical Properties of ZnO Soccer-Ball Structures Grown by Vapor Phase Transport
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概要
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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 (D\text{oX), 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 D\text{oX 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.
- 2012-02-25
著者
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Kim Min
Department Of Chemical Engineering Cheju National University
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Kim Jin
Research Center For Proteineous Materials Chosun University
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Jung Jae
School Of Chemical Engineering And Technology Yeungnam University
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Kim Jong
Department Of Agricultural Bio-resources National Academy Of Agricultural Science Rural Development
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Leem Jae-Young
Department of Nano Systems Engineering, Center for Nano Manufacturing, Inje University, Gimhae 621-749, Republic of Korea
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Leem Jae-Young
Department of Nano Systems Engineering, Center for Nano Manufacturing, Inje University, Gimhae, Gyeongnam 621-749, Republic of Korea
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Nam Giwoong
Department of Nano Engineering, Inje University, Gimhae, Gyeongnam 621-749, Republic of Korea
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Lee Sang-heon
School of Chemical Engineering, Yeungnam University, Gyeongsan, Gyeongbuk 712-749, Republic of Korea
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Kim Soaram
Department of Nano Engineering, Inje University, Gimhae, Gyeongnam 621-749, Republic of Korea
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Kim Do
Holcombe Department of Electrical and Computer Engineering, Center for Optical Materials Science and Engineering Technologies, Clemson University, Clemson, SC 29634, U.S.A.
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Yim Kwang
Department of Nano Systems Engineering, Center for Nano Manufacturing, Inje University, Gimhae, Gyeongnam 621-749, Republic of Korea
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Lee Dong-Yul
Epi R&D team, Samsung LED Co., Ltd., Suwon, Gyeonggi 443-373, Republic of Korea
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Son Jeong-Sik
Department of Visual Optics, Kyungwoon University, Gumi, Gyeongbuk 730-850, Republic of Korea
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Kim Sung-O
Holcombe Department of Electrical and Computer Engineering, Center for Optical Materials Science and Engineering Technologies, Clemson University, Clemson, SC 29634, U.S.A.
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Lee Dong-Yul
Epi R&D team, Samsung LED Co., Ltd., Suwon, Gyeonggi 443-373, Republic of Korea
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Yim Kwang
Department of Nano Systems Engineering, Center for Nano Manufacturing, Inje University, Gimhae 621-749, Republic of Korea
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Kim Min
Department of Applied Science, Korea Maritime University, Busan 606-791, Korea
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Kim Min
Department of Nano Systems Engineering, Center for Nano Manufacturing, Inje University, Gimhae, Gyeongnam 621-749, Republic of Korea
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Kim Jin
Research Center of Advanced Materials Development (RCAMD), Division of Advanced Materials Engineering, Chonbuk National University, Jeonju, Chonbuk 561-756, Republic of Korea
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Son Jeong-Sik
Department of Visual Optics, Kyungwoon University, Gumi 730-850, Korea
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KIM Min
Department of Animal Science and Biotechnology, College of Agriculture and Life Science, Chungnam National University, Daejeon 305–764, Korea
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