The synergistic effect of non-stoichiometry and Sb-doping on air-stable α-CsPbI3 for efficient carbon-based perovskite solar cells†,Nanoscale

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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 CsPb_0.96Sb_0.04I₃ achieve a promising power conversion efficiency (PCE) of 5.18%, a record value for α-CsPbI₃-based PSCs without hole transport materials. Significantly, the CsPb_0.96Sb_0.04I₃ 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）_0.96锑_0.04我₃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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