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

页码：445 / 448

页数：4

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