On tuning the spectroscopic properties of LaAlO3:Pr3+ nanocrystallites

被引：35
|
作者：
Deren, P. J. [1 ]
Lemanski, K. [1 ]
机构：
[1] Inst Niskich Temp & Badan Strukturalnych PAN, PL-50950 Wroclaw, Poland
来源：
JOURNAL OF LUMINESCENCE | 2011年 / 131卷 / 03期
关键词：
Nanocrystals; LaAlO3; Phase transition; Chromium; Praseodymium; SIZE;
D O I：
10.1016/j.jlumin.2010.11.035
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
In this study we report the preparation and spectroscopic properties of nanosized crystallites LaAlO3 doped with Pr3+ (1 mol%) and traces of Cr3+ ions, produced by the precipitation method. A new material has been obtained whose spectroscopic properties differ nominally from the same bulk of LaAlO3:Pr3+. It was observed that with increase in the nano-LaAlO3 sample diameter above 110 nm the perovskite structure changes from cubic to rhombohedral. As a result, the bigger samples have two orders of magnitudes of higher emission intensity when compared to the smaller ones. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：445 / 448
页数：4
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