材料科学
钙钛矿(结构)
光伏
光电子学
卤化物
能量转换效率
发光二极管
离子
光伏系统
结晶学
无机化学
化学
生态学
生物
有机化学
作者
Kai‐Li Wang,Haizhou Lu,Meng Li,Chun‐Hao Chen,D. Zhang,Jing Chen,Junjie Wu,Yuhang Zhou,Xueqi Wang,Zhenhuang Su,Yiran Shi,Qi‐Sheng Tian,Yuxiang Ni,Xingyu Gao,Shaik M. Zakeeruddin,Michaël Grätzel,Zhao‐Kui Wang,Liang‐Sheng Liao
标识
DOI:10.1002/adma.202210106
摘要
Metal halide perovskites are ideal candidates for indoor photovoltaics (IPVs) because of their easy-to-adjust bandgaps, which can be designed to cover the spectrum of any artificial light source. However, the serious non-radiative carrier recombination under low light illumination restrains the application of perovskite-based IPVs (PIPVs). Herein, polar molecules of amino naphthalene sulfonates are employed to functionalize the TiO2 substrate, anchoring the CsPbI3 perovskite crystal grains with a strong ion-dipole interaction between the molecule-level polar interlayer and the ionic perovskite film. The resulting high-quality CsPbI3 films with the merit of defect-immunity and large shunt resistance under low light conditions enable the corresponding PIPVs with an indoor power conversion efficiency of up to 41.2% (Pin : 334.11 µW cm-2 , Pout : 137.66 µW cm-2 ) under illumination from a commonly used indoor light-emitting diode light source (2956 K, 1062 lux). Furthermore, the device also achieves efficiencies of 29.45% (Pout : 9.80 µW cm-2 ) and 32.54% (Pout : 54.34 µW cm-2 ) at 106 (Pin : 33.84 µW cm-2 ) and 522 lux (Pin : 168.21 µW cm-2 ), respectively.
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