標題: Size dependence of exciton-phonon coupling in sol-gel ZnMgO powders
作者: Chia, C. H.
Chen, J. N.
Han, T. C.
Chiou, J. W.
Lin, Y. C.
Hsu, W. L.
Chou, W. C.
電子物理學系
Department of Electrophysics
公開日期: 15-三月-2011
摘要: We found that the exciton-phonon coupling in the Zn(1-x)Mg(x)O powders (0.01 <= x <= 0.07) is greatly influenced by the crystalline-size. Two well-resolved photoluminescence (PL) bands due to recombination of free exciton and its longitudinal optical (LO)-phonon replicas enable us to analyze the relative intensities among free excitons, one-LO-phonon replicas, and two-LO-phonon replicas. As crystalline size increases, a larger enhancement of the PL-intensity ratio of a free exciton to its LO-phonon replicas was found compared to that of two LO-phonon replica to one-LO-phonon replica. (C) 2011 American Institute of Physics. [doi:10.1063/1.3563574]
URI: http://dx.doi.org/10.1063/1.3563574
http://hdl.handle.net/11536/9140
ISSN: 0021-8979
DOI: 10.1063/1.3563574
期刊: JOURNAL OF APPLIED PHYSICS
Volume: 109
Issue: 6
結束頁: 
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