Nature of room-temperature photoluminescence in ZnO

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The temperature dependence of the photoluminescence (PL) transitions associated with various excitons and their phonon replicas in high-purity bulk ZnO has been studied at temperatures from 12 K to above room temperature (320 K). Several strong PL emission lines associated with LO phonon replicas of free and bound excitons are clearly observed. The room temperature PL spectrum is dominated by the phonon replicas of the free exciton transition with the maximum at the first LO phonon replica. The results explain the discrepancy between the transition energy of free exciton determined by reflection measurement and the peak position obtained by the ... continued below

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Shan, W.; Walukiewicz, W.; Ager III, J.W.; Yu, K.M.; Yuan, H.B.; Xin, H.P. et al. November 11, 2004.

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The temperature dependence of the photoluminescence (PL) transitions associated with various excitons and their phonon replicas in high-purity bulk ZnO has been studied at temperatures from 12 K to above room temperature (320 K). Several strong PL emission lines associated with LO phonon replicas of free and bound excitons are clearly observed. The room temperature PL spectrum is dominated by the phonon replicas of the free exciton transition with the maximum at the first LO phonon replica. The results explain the discrepancy between the transition energy of free exciton determined by reflection measurement and the peak position obtained by the PL measurement.

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  • Journal Name: Applied Physics Letters; Journal Volume: 86; Related Information: Journal Publication Date: 2005

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  • Report No.: LBNL--56622
  • Grant Number: DE-AC02-05CH11231
  • Office of Scientific & Technical Information Report Number: 887181
  • Archival Resource Key: ark:/67531/metadc876693

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  • November 11, 2004

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  • Sept. 21, 2016, 2:29 a.m.

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  • Sept. 30, 2016, 1:59 p.m.

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Shan, W.; Walukiewicz, W.; Ager III, J.W.; Yu, K.M.; Yuan, H.B.; Xin, H.P. et al. Nature of room-temperature photoluminescence in ZnO, article, November 11, 2004; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc876693/: accessed August 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.