Photon recycling in perovskite CH3NH3PbX3 (X = I, Br, Cl) bulk single crystals and polycrystalline films

被引：33
|
作者：
Yamada, Takumi [1 ]
Yamada, Yasuhiro [2 ]
Kanemitsu, Yoshihiko [1 ]
机构：
[1] Kyoto Univ, Inst Chem Res, Uji, Kyoto 6110011, Japan
[2] Chiba Univ, Dept Phys, Yayoi Cho, Chiba 2638522, Japan
来源：
JOURNAL OF LUMINESCENCE | 2020年 / 220卷
关键词：
Perovskite; Reabsorption; Carrier diffusion; Photoluminescence; Photon recycling; LIGHT-EMITTING-DIODES; LEAD IODIDE PEROVSKITE; SOLAR-CELLS; HALIDE PEROVSKITES; RADIATIVE RECOMBINATION; CARRIER LIFETIME; EFFICIENCY; TRIHALIDE; LENGTHS; IMPACT;
D O I：
10.1016/j.jlumin.2019.116987
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Lead halide perovskite semiconductors are promising materials for optical devices due to their excellent optoelectronic properties. In addition to large light absorption coefficients, which originate from a direct band gap structure, they exhibit almost no Stokes shift between absorption edge and photoluminescence (PL) peak. Therefore, the effect of PL reabsorption plays an important role for their emission spectra in bulk crystals. In this review, we analyze the PL dynamics in CH3NH3PbX3 (X = I, Br, Cl) single crystals to provide a clear picture of the dynamical effects of PL reabsorption that occur in perovskites. This knowledge is essential for accurate characterization via PL and photon management for optical devices. We also show that the grain size dependence of PL spectra obtained from polycrystalline thin films can be interpreted by PL reabsorption.
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页数：6
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