Strongly enhanced free-exciton luminescence in microcrystalline CsPbCl3 films produced via the amorphous phase

被引：6
|
作者：
Kondo, S [1 ]
Saito, T [1 ]
机构：
[1] Univ Fukui, Res Ctr Dev Far Infrared Region, Fukui 9108507, Japan
来源：
SOLID STATE COMMUNICATIONS | 2003年 / 127卷 / 11期
关键词：
CsPbCl3; luminescence; exciton; superradiance; quantum confinement;
D O I：
10.1016/S0038-1098(03)00563-5
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
High-quality CsPbCl3 films composed of crystallites with narrow size distributions are achieved for various size levels, from microcrystalline to polycrystalline, by a novel heat-treatment method applied to the same amorphous films. Their photoluminescence is dominated by free-exciton emission at every size level without showing trapped-exciton emission in great contrast to the case for single crystals. The microcrystalline state shows more than an order of magnitude stronger free-exciton emission than the polycrystalline state, and exhibits intense stimulated emission under high-power excitation. (C) 2003 Elsevier Ltd. All rights reserved.
引用
收藏
页码：731 / 736
页数：6
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