Biexciton emission from sol-gel ZnMgO nanopowders

標題:	Biexciton emission from sol-gel ZnMgO nanopowders
作者:	Chia, C. H. Lai, Y. J. Hsu, W. L. Han, T. C. Chiou, J. W. Hu, Y. M. Lin, Y. C. Fan, W. C. Chou, W. C. 電子物理學系 Department of Electrophysics
關鍵字:	biexcitons;binding energy;electron-hole recombination;magnesium compounds;nanoparticles;nonlinear optics;optical pumping;photoluminescence;sol-gel processing;wide band gap semiconductors;zinc compounds
公開日期:	10-May-2010
摘要:	We studied the power-dependent photoluminescence of Zn(1-x)Mg(x)O nanopowders grown by sol-gel method, at temperature T = 100 K. At moderate optical pumping intensity, a nonlinear emission band due to the radiative recombination of free biexcitons was detected. We found that the free biexciton binding energies of Zn(1-x)Mg(x)O nanopowder (0.01 <= x <= 0.05) are nearly constant (13.5 +/- 1.5 meV). (C) 2010 American Institute of Physics. [doi:10.1063/1.3428780]
URI:	http://dx.doi.org/10.1063/1.3428780 http://hdl.handle.net/11536/5409
ISSN:	0003-6951
DOI:	10.1063/1.3428780
期刊:	APPLIED PHYSICS LETTERS
Volume:	96
Issue:	19
結束頁:
Appears in Collections:	Articles

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