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The synergistic effect of non-stoichiometry and Sb-doping on air-stable α-CsPbI3 for efficient carbon-based perovskite solar cells†
Nanoscale ( IF 5.8 ) Pub Date : 2018-04-25 00:00:00 , DOI: 10.1039/c7nr09657g
Sisi Xiang 1, 2, 3, 4 , Weiping Li 1, 2, 3, 4 , Ya Wei 1, 2, 3, 4 , Jiaming Liu 1, 2, 3, 4 , Huicong Liu 1, 2, 3, 4 , Liqun Zhu 1, 2, 3, 4 , Haining Chen 1, 2, 3, 4
Affiliation  

α-CsPbI3 with the most suitable band gap for all-inorganic perovskite solar cell (PSC) application faces an issue of phase instability at low temperature in an air atmosphere. Herein, through stoichiometric investigation, α-CsPbI3 is successfully obtained with excess CsI at 110 °C in an air atmosphere. By doping α-CsPbI3 with Sb, phase stability is further enhanced and the film morphology is also improved. Carbon-based perovskite solar cells (C-PSCs) based on CsPb0.96Sb0.04I3 achieve a promising power conversion efficiency (PCE) of 5.18%, a record value for α-CsPbI3-based PSCs without hole transport materials. Significantly, the CsPb0.96Sb0.04I3 C-PSCs retain 93% of the initial PCE after 37 days of storage in an air atmosphere. Therefore, the synergistic effect of non-stoichiometry and Sb-doping presents a promising strategy to design all-inorganic lead halide PSCs with high performance and stability.

中文翻译:

非化学计量和Sb掺杂上空气稳定的α-CsPbI的协同效应3为有效的基于碳-钙钛矿太阳能电池

α-CsPbI 3最合适的带隙为所有-无机钙钛矿的太阳能电池(PSC)应用面临在空气气氛中在低温下相不稳定性的问题。在本文中,通过化学计量的调查,α-CsPbI 3被成功地用过量的CsI在空气气氛中获得的在110℃下。通过掺杂α-CsPbI 3 Sb的,相稳定性进一步增强,膜形态也提高。基于碳的钙钛矿基于CSPB太阳能电池(C-的PSC)0.960.043实现的5.18%有希望的功率转换效率(PCE),对于α-CsPbI一个记录值3系的PSC没有空穴传输材料。值得注意的是,CsPb 0.96在空气中存储37天后,Sb 0.04 I 3 C-PSC保留了初始PCE的93%。因此,非化学计量和Sb掺杂的协同效应为设计具有高性能和稳定性的全无机卤化铅PSC提供了一种有前途的策略。
更新日期:2018-04-25
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