Determination of the microstructure of Eu-treated ZnO nanowires by x-ray absorption

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/52739

Title:	Determination of the microstructure of Eu-treated ZnO nanowires by x-ray absorption
Authors:	Huang,WL;Labis,J;Ray,SC;Liang,YR;Pao,CW;Tsai,HM;Du,CH;Pong,WF;Chiou,JW;Tsai,MH;Lin,HJ;Lee,JF;Chou,YT;Shen,JL;Chen,CW;Chi,GC
Contributors:	物理學系
Date:	2010
Issue Date:	2012-06-11 10:42:21 (UTC+8)
Publisher:	國立中央大學
Abstract:	X-ray absorption near-edge structure (XANES), extended x-ray absorption fine structures (EXAFS), and photoluminescence measurements were used to elucidate the microstructural and photoluminescence properties of ZnO nanowires (ZnO-NWs) that had been treated with Eu by thermal diffusion. The O K- and Eu L(3)-edge XANES and EXAFS spectra at the Zn K- and Eu L(3)-edge verified the formation of Eu(2)O(3)-like layer on the surface of ZnO-NWs. X-ray diffraction, XANES and EXAFS measurements consistently suggest the lack of substitutional doping of Eu ions at the Zn ion sites in the interior of ZnO-NWs. The clear sharp and intense emission bands in the range 610-630 nm of Eu-treated ZnO-NWs originated from the intra-4f transition of Eu ions in the Eu(2)O(3)-like surface layer.
Relation:	APPLIED PHYSICS LETTERS
Appears in Collections:	[Department of Physics] journal & Dissertation

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