丙基碘化铵掺杂制备稳定高效的FAPbI<sub>3</sub>钙钛矿太阳能电池

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摘要黑色的α相甲脒铅碘(α-FAPbI₃)由于其出色的光电性质在光伏领域受到广泛关注。然而,α-FAPbI₃在室温下容易转变为没有光学活性的黄色相(δ-FAPbI₃),降低器件的光伏性能和稳定性。通过在FAPbI₃前驱液中掺杂丙基碘化铵(PAI),在空气气氛下制备纯α-FAPbI₃薄膜。研究发现,PAI掺杂可以抑制α-FAPbI₃的相转变而不改变其光学带隙。同时,PAI掺杂后的FAPbI₃薄膜的晶体质量、器件光伏性能和稳定性均得到显著提升。掺杂1.0%(摩尔分数)PAI的FAPbI₃钙钛矿电池,其光电转换效率达到22.6%。结果表明PAI掺杂是提高α-FAPbI₃钙钛矿电池光伏性能和稳定性的一种有效策略。

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	张越
	许艳婷
	蒋克健
	周雪琴

关键词：钙钛矿掺杂稳定性光电转换效率功能材料

Abstract： Hybrid perovskite FAPbI₃ is regarded as a promising absorber material for photovoltaic solar cells owing to its ideal bandgap and outstanding photoelectric properties. However, inherent phase instability of black perovskite (α-FAPbI₃) at room temperature remains a big obstacle for its application in photovoltaics. Herein, pure α-FAPbI₃ thin films were prepared in air atmosphere by doping propylammonium iodide (PAI) in FAPbI₃ precursor solution. It is found that the doping of PAI can inhibit the formation of the undesired δ-FAPbI₃, enhance the crystallinity and light absorbability, without widening the optical bandgap. Meanwhile, the photovoltaic performance and stability of the PAI-doped FAPbI₃ films are significantly improved. As a result, the device doped with 1.0% (molar fraction) PAI achieved the best photoelectric conversion efficiency (PCE) of 22.6%, PAI doping is an effective strategy to improve the photovoltaic performance and stability of α-FAPbI₃ perovskite cells.

Keywords： perovskite doping stability photoelectric conversion efficiency functional material

Received 2021-05-11;

Fund:国家自然科学基金(61874123;91963212和51961145102)。

Corresponding Authors: 蒋克健,副研究员,E-mail:kjjiang@iccas.ac.cn;周雪琴,教授,E-mail:zhouxueqin@tju.edu.cn Email: kjjiang@iccas.ac.cn;zhouxueqin@tju.edu.cn

About author: 张越(1996-),女,硕士研究生,现从事钙钛矿太阳能电池领域的研究。

引用本文:

张越, 许艳婷, 蒋克健, 周雪琴.丙基碘化铵掺杂制备稳定高效的FAPbI₃钙钛矿太阳能电池[J]. 化学工业与工程, 2023,40(2): 33-40

ZHANG Yue, XU Yanting, JIANG Kejian, ZHOU Xueqin.Propylammonium iodide doping in enhanced stability and performance of FAPbI₃ perovskite for photovoltaics[J]. Chemcial Industry and Engineering, 2023,40(2): 33-40

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