Spectral Studies of Lead‐Free Organic‐Inorganic Hybrid Solid‐State Perovskites CH3NH3Bi2/3I3 and CH3NH3Pb1/2Bi1/3I3: Potential Photo Absorbers,ChemistrySelect

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Spectral Studies of Lead‐Free Organic‐Inorganic Hybrid Solid‐State Perovskites CH3NH3Bi2/3I3 and CH3NH3Pb1/2Bi1/3I3: Potential Photo Absorbers
ChemistrySelect ( IF 1.9 ) Pub Date : 2018-01-16 , DOI: 10.1002/slct.201702745
Pritam Dey _{1,

2} , Vijaykant Khorwal ₃ , Pratik Sen ₃ , Krishanu Biswas ₂ , Tanmoy Maiti _{1,

2}

Affiliation

The spectral analysis of bismuth based halide perovskite materials has been carried out using FTIR, UV‐Vis, photoluminescence and fluorescence time resolved spectroscopy. Methylammonium bismuth iodide (CH₃NH₃Bi_2/3I₃) has shown promising results to become a potential candidate for the replacement of lead based organic‐inorganic hybrid halide perovskite solar cells, having superior moisture stability and environmentally benign nature. The lead and bismuth both have been used to synthesize methylammonium lead bismuth iodide (CH₃NH₃Pb_1/2Bi_1/3I₃) to develop an intermediate photo absorber to counter the moisture degradation properties as well as the low absorbance of bismuth based perovskites. Spectral studies have revealed information about electron transitions, phase separation and exciton recombination time.

中文翻译：

无铅有机-无机杂化钙钛矿CH3NH3Bi2 / 3I3和CH3NH3Pb1 / 2Bi1 / 3I3的光谱研究：潜在的光吸收剂

铋基卤化物钙钛矿材料的光谱分析是使用FTIR，UV-Vis，光致发光和荧光时间分辨光谱进行的。甲基碘化碘化铋铵（CH ₃ NH ₃ Bi _2/3 I ₃）已显示出令人鼓舞的结果，有望成为替代铅基有机-无机杂化卤化物钙钛矿太阳能电池的潜在候选者，具有优异的水分稳定性和环境友好性。铅和铋都已用于合成甲基铵碘化铋铋（CH ₃ NH ₃ Pb _1/2 Bi _1/3 I ₃）开发一种中间光吸收剂，以抵消其水分降解性能以及铋基钙钛矿的低吸收率。光谱研究揭示了有关电子跃迁，相分离和激子复合时间的信息。

更新日期：2018-01-16

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