Lead-Free All-Inorganic Cesium Bismuth Iodide-Based Perovskite Solar Cells: Recent Advances, Current Limitations, and Future Prospects,Solar RRL

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Lead-Free All-Inorganic Cesium Bismuth Iodide-Based Perovskite Solar Cells: Recent Advances, Current Limitations, and Future Prospects
Solar RRL ( IF 6.0 ) Pub Date : 2024-01-11 , DOI: 10.1002/solr.202300984
Shuang Li ₁ , Jingsheng He ₁ , Ran Ran ₁ , Wei Zhou ₁ , Wei Wang ₁ , Zongping Shao _{1,

2}

Affiliation

Remarkable achievements have been made in the development of perovskite solar cells (PSCs) with a rapidly boosting rate of power conversion efficiencies (PCEs) from 3.8% to 26.1%. Nevertheless, the toxicity of lead (Pb) elements and the hygroscopicity of organic cations in high-efficiency PSCs severely hamper the commercialization of this technology. Consequently, Pb-free all-inorganic PSCs have received increasing attention recently to resolve the above-mentioned toxicity and instability problems. Among various Pb-free all-inorganic halide perovskites, cesium bismuth iodide (CBI)-based perovskites have gained particular attention as light absorbers in PSCs due to the tunable/small bandgaps, long carrier diffusion length/lifetime, and superb sunlight absorption coefficients. Nevertheless, the PCEs of CBI-based PSCs are still far away from Pb-based organic–inorganic counterparts because of the low structural dimensions and inferior perovskite film quality. Herein, the recent advances of CBI-based perovskites as light-absorbing materials in Pb-free all-inorganic PSCs are reviewed by emphasizing the distinct structural/optical/electronic properties and currently existing limitations. Additionally, several distinct strategies to boost the PCEs and robusticity of CBI-based PSCs are presented. Finally, the unsolved key problems and future directions of CBI-based PSCs are proposed, aiming to provide important insights for the further development of CBI-based PSCs to realize sustainable, nontoxic, high-performance perovskite photovoltaics.

中文翻译：

无铅全无机碘化铯铋基钙钛矿太阳能电池：最新进展、当前限制和未来前景

钙钛矿太阳能电池（PSC）的发展取得了显着的成就，功率转换效率（PCE）从3.8％迅速提高到26.1％。然而，高效PSC中铅（Pb）元素的毒性和有机阳离子的吸湿性严重阻碍了该技术的商业化。因此，无铅全无机PSCs最近受到越来越多的关注，以解决上述毒性和不稳定性问题。在各种无铅全无机卤化物钙钛矿中，碘化铯铋（CBI）基钙钛矿由于其带隙可调/小、载流子扩散长度/寿命长以及优异的太阳光吸收系数，作为PSC中的光吸收剂而受到特别关注。然而，由于结构尺寸低和钙钛矿薄膜质量较差，基于 CBI 的 PSC 的 PCE 仍然与基于 Pb 的有机-无机对应物相距甚远。本文通过强调独特的结构/光学/电子特性和目前存在的局限性，回顾了基于 CBI 的钙钛矿作为无铅全无机 PSC 光吸收材料的最新进展。此外，还提出了几种不同的策略来提高基于 CBI 的 PSC 的 PCE 和鲁棒性。最后，提出了基于CBI的太阳能电池尚未解决的关键问题和未来发展方向，旨在为基于CBI的太阳能电池的进一步发展，实现可持续、无毒、高性能的钙钛矿光伏提供重要的见解。

更新日期：2024-01-11

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