Guanidinium-formamidinium lead iodide: a layered perovskite-related compound with red luminescence at room temperature,Journal of the American Chemical Society

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Guanidinium-formamidinium lead iodide: a layered perovskite-related compound with red luminescence at room temperature
Journal of the American Chemical Society ( IF 14.4 ) Pub Date : 2018-03-04 , DOI: 10.1021/jacs.8b00194
Olga Nazarenko _{1,

2} , Martin R Kotyrba _{1,

2} , Sergii Yakunin _{1,

2} , Marcel Aebli _{1,

2} , Gabriele Rainò _{1,

2} , Bogdan M Benin _{1,

2} , Michael Wörle ₁ , Maksym V Kovalenko _{1,

2}

Affiliation

Two-dimensional hybrid organic–inorganic lead halides perovskite-type compounds have attracted immense scientific interest due to their remarkable optoelectronic properties and tailorable crystal structures. In this work, we present a new layered hybrid lead halide, namely [CH(NH2)2][C(NH2)3]PbI4, wherein puckered lead-iodide layers are separated by two small and stable organic cations: formamidinium, CH(NH2)2+, and guanidinium, C(NH2)3+. This perovskite is thermally stable up to 255 °C, exhibits room-temperature photoluminescence in the red region with a quantum yield of 3.5%, and is photoconductive. This study highlights a vast structural diversity that exists in the compositional space typically used in perovskite photovoltaics.

中文翻译：

胍甲脒碘化铅：一种在室温下发红光的层状钙钛矿相关化合物

二维杂化有机-无机卤化铅钙钛矿型化合物由于其卓越的光电特性和可定制的晶体结构而引起了巨大的科学兴趣。在这项工作中，我们提出了一种新的层状杂化卤化铅，即[CH(NH2)2][C(NH2)3]PbI4，其中褶皱的碘化铅层被两个小而稳定的有机阳离子分开：甲脒，CH( NH2)2+ 和胍，C(NH2)3+。这种钙钛矿在高达 255 °C 的温度下具有热稳定性，在红色区域表现出室温光致发光，量子产率为 3.5%，并且具有光电导性。这项研究强调了钙钛矿光伏电池中通常使用的成分空间中存在的巨大结构多样性。

更新日期：2018-03-04

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