Correlation between the characteristic green emissions and specific defects of ZnO

In this work, the correlation between the characteristic green emissions and specific defects of ZnO was investigated through a series of experiments that were designed to separate the subtle interplays among the various types of specific defects. With physical analysis and multimode Brownian oscill...

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Main Authors: Liang, Meng Heng, Tay, Yee Yan, Tan, T. T., Boey, Freddy Yin Chiang, Ye, Jun, Zhao, Yang, Norby, T., Li, Sean
Other Authors: School of Materials Science & Engineering
Format: Article
Language:English
Published: 2011
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Online Access:https://hdl.handle.net/10356/90488
http://hdl.handle.net/10220/6737
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-904882023-07-14T15:51:18Z Correlation between the characteristic green emissions and specific defects of ZnO Liang, Meng Heng Tay, Yee Yan Tan, T. T. Boey, Freddy Yin Chiang Ye, Jun Zhao, Yang Norby, T. Li, Sean School of Materials Science & Engineering DRNTU::Engineering::Materials::Photonics and optoelectronics materials In this work, the correlation between the characteristic green emissions and specific defects of ZnO was investigated through a series of experiments that were designed to separate the subtle interplays among the various types of specific defects. With physical analysis and multimode Brownian oscillator modeling, the underlying mechanisms of the variant effects on green emission were revealed. The results demonstrate that the observed green emissions can be identified as two types of individual emissions, namely high energy and low energy, that are associated with specific defects and their locations. The surface modification that leads to downwards band bending was found to be responsible for the high-energy green emission. The relationship between the intensity of the low- energy green emission and the crystallographic lattice contraction indicates that oxygen vacancy is the dominant cause of such an emission that resides within the bulk of ZnO. Published version 2011-03-03T08:46:16Z 2019-12-06T17:48:36Z 2011-03-03T08:46:16Z 2019-12-06T17:48:36Z 2010 2010 Journal Article Tay, Y. Y., Tan, T. T., Boey, F., Liang, M. H., Ye, J., Zhao, Y., et al. (2010). Correlation between the Characteristic Green Emissions and Specific Defects of ZnO, Physical Chemistry Chemical Physics, (12), 2373-2379. https://hdl.handle.net/10356/90488 http://hdl.handle.net/10220/6737 10.1039/b922372j en Physical chemistry chemical physics © 2010 Royal Society of Chemistry. This paper was published in Physical Chemistry Chemical Physics and is made available as an electronic reprint (preprint) with permission of Royal Society of Chemistry. The paper can be found at: [Doi: http://dx.doi.org/10.1039/b922372j]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law. 7 p. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic DRNTU::Engineering::Materials::Photonics and optoelectronics materials
spellingShingle DRNTU::Engineering::Materials::Photonics and optoelectronics materials
Liang, Meng Heng
Tay, Yee Yan
Tan, T. T.
Boey, Freddy Yin Chiang
Ye, Jun
Zhao, Yang
Norby, T.
Li, Sean
Correlation between the characteristic green emissions and specific defects of ZnO
description In this work, the correlation between the characteristic green emissions and specific defects of ZnO was investigated through a series of experiments that were designed to separate the subtle interplays among the various types of specific defects. With physical analysis and multimode Brownian oscillator modeling, the underlying mechanisms of the variant effects on green emission were revealed. The results demonstrate that the observed green emissions can be identified as two types of individual emissions, namely high energy and low energy, that are associated with specific defects and their locations. The surface modification that leads to downwards band bending was found to be responsible for the high-energy green emission. The relationship between the intensity of the low- energy green emission and the crystallographic lattice contraction indicates that oxygen vacancy is the dominant cause of such an emission that resides within the bulk of ZnO.
author2 School of Materials Science & Engineering
author_facet School of Materials Science & Engineering
Liang, Meng Heng
Tay, Yee Yan
Tan, T. T.
Boey, Freddy Yin Chiang
Ye, Jun
Zhao, Yang
Norby, T.
Li, Sean
format Article
author Liang, Meng Heng
Tay, Yee Yan
Tan, T. T.
Boey, Freddy Yin Chiang
Ye, Jun
Zhao, Yang
Norby, T.
Li, Sean
author_sort Liang, Meng Heng
title Correlation between the characteristic green emissions and specific defects of ZnO
title_short Correlation between the characteristic green emissions and specific defects of ZnO
title_full Correlation between the characteristic green emissions and specific defects of ZnO
title_fullStr Correlation between the characteristic green emissions and specific defects of ZnO
title_full_unstemmed Correlation between the characteristic green emissions and specific defects of ZnO
title_sort correlation between the characteristic green emissions and specific defects of zno
publishDate 2011
url https://hdl.handle.net/10356/90488
http://hdl.handle.net/10220/6737
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