Experimental and theoretical correlation of very intense visible green photoluminescence in BaZrO3 powders

被引：95

作者：

Cavalcante, L. S. ^{[1
]}

Longo, V. M. ^{[1
]}

Zampieri, M. ^{[1
]}

Espinosa, J. W. M. ^{[1
]}

Pizani, P. S. ^{[1
]}

Sambrano, J. R. ^{[2
,5
]}

Varela, J. A. ^{[2
,5
]}

Longo, E. ^{[2
,5
]}

Simoes, M. L. ^{[3
]}

Paskocimas, C. A. ^{[4
]}

机构：

[1] Univ Fed Sao Carlos, PPGCEM, LIEC DQ, BR-13565905 Sao Carlos, SP, Brazil

[2] Univ Estadual Paulista, LIEC IQ, BR-14801907 Araraquara, SP, Brazil

[3] EMBRAPA Agr Instrumentat, BR-13560970 Sao Carlos, SP, Brazil

[4] Univ Fed Rio Grande do Norte, Dept Quim, Lab Anal Term & Mat, BR-59072970 Natal, RN, Brazil

[5] Univ Estadual Paulista, LIEC IQ, BR-17033360 Bauru, Brazil

来源：

JOURNAL OF APPLIED PHYSICS | 2008年 / 103卷 / 06期

基金：

巴西圣保罗研究基金会;

关键词：

D O I：

10.1063/1.2901176

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Very intense visible green photoluminescence (PL) was observed at room temperature in structurally ordered-disordered BaZrO3 powders. Ab initio calculations, ultraviolet-visible absorption spectroscopy, electron paramagnetic resonance, and PL were performed. Theoretical and experimental results showed that local defects in the cubic structure caused by [ZrO5 center dot V-O(z)] complex clusters, where V-O(z) = V-O(x), V-O(center dot), and V-O(center dot center dot), play an important role in the formation of hole-electron pairs, giving rise to a charge gradient in the structure which is responsible for PL emission. (c) 2008 American Institute of Physics.

引用

页数：8

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