Room-temperature stimulated emission from microcrystalline CsPbCl3 films -: art. no. 131912

被引:15
作者
Kondo, S [1 ]
Ohsawa, H
Saito, T
Asada, H
Nakagawa, H
机构
[1] Univ Fukui, Res Ctr Dev Far Infrared Reg, Bunkyo Ku, Fukui 9108507, Japan
[2] Univ Fukui, Fac Engn, Dept Appl Phys, Bunkyo Ku, Fukui 9108507, Japan
[3] Univ Fukui, Fac Engn, Dept Elect, Bunkyo Ku, Fukui 9108507, Japan
关键词
D O I
10.1063/1.2067700
中图分类号
O59 [应用物理学];
学科分类号
摘要
Photoluminescence from microcrystalline CsPbCl3 films prepared by crystallization from the amorphous phase is measured under N-2 laser excitation. Stimulated emission due to free exciton-free exciton inelastic collision occurs not only at 77 K (as reported very recently) but also at room temperature (RT). The intensity of the stimulated emission more rapidly increases with pumping intensity at RT than at 77 K, although the threshold is higher at the former temperature (600 kW cm(-2)) than at the latter (240 kW cm(-2)). This demonstration of the stimulated emission at RT from metal halides encourages us to explore laser media in metal halides because of their material abundance. (C) 2005 American Institute of Physics.
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页码:1 / 3
页数:3
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