Optically pumped lasing and electroluminescence of formamidinium perovskite semiconductors prepared by the cast-capping method
Optically pumped lasing and electroluminescence of formamidinium perovskite semiconductors prepared by the cast-capping method
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DOI：
10.7567/jjap.57.03eh05
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发表时间：
2018-03
影响因子：
1.5
通讯作者：
F. Sasaki;V. Nguyen;H. Yanagi
中科院分区：
文献类型：
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作者：
F. Sasaki;V. Nguyen;H. Yanagi
在溶液处理的钙钛矿半导体材料甲脒基溴化铅CH(NH2)2PbBr3中观察到光泵浦激光和电致发光现象。采用“铸盖法”的简单固溶工艺，可获得表面平整、边缘锋利的微腔。晶体显示出清晰的法布里-普氏腔多模激光。模间隔很好地解释了光学常数与材料的大色散。我们也制作了电致发光器件，并在单层材料中获得了清晰的电致发光，但电致发光强度淬火迅速。
Optically pumped lasing and electroluminescence (EL) have been observed in solution-processed perovskite semiconducting materials of formamidinium lead bromide, CH(NH2)2PbBr3. Microcavities with flat surfaces and sharp edges have been easily obtained by the simple solution process called the “cast-capping method”. The crystals show clear multimode lasing of Fabry–Pérot cavities. The mode intervals are well explained by the optical constants with large dispersions of the materials. We have also fabricated EL devices and obtained clear EL in a single layer of the materials, but the EL intensity has been quenched rapidly.