FAPbI3-nanoparticles with ligands act synergistically in absorbent layers for high-performance and stable FAPbI3 based perovskite solar cells

IF 17.1 1区材料科学 Q1 CHEMISTRY, PHYSICAL Nano Energy Pub Date : 2024-11-14 DOI:10.1016/j.nanoen.2024.110476

Weina Zhang , Takeru Bessho , Ludmila Cojocaru , Jotaro Nakazaki , Haibin Wang , Xiao Liu , Miwako Furue , Satoshi Uchida , Hiroshi Segawa

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Abstract

The performance of perovskite solar cells (PSCs) depends on the quality of the perovskite absorber layer. In this study, oleic acid (OA) and oleylamine (OAm) ligand-capped formamidinium lead iodide (FAPbI₃) nanoparticles (NPs) were incorporated into the formamidinium iodide (FAI) solution, which is one of the precursors for the sequential deposition of the FAPbI₃ layer. The synergistic effect of the FAPbI₃-NPs and the capped ligand substantially improves the crystallinity, uniformity, and morphology of the bulk FAPbI₃ perovskite films. The enhancements lead to a reduction in charge recombination and a boost in charge transfer efficiency, enabling the optimized PSCs to achieve a remarkable peak power conversion efficiency (PCE) of 25.68 %. Moreover, these PSCs show good stability, with unencapsulated devices maintaining 93 % of the peak performance under ambient air (RH 50 %) for 1000 hours.

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带有配体的 FAPbI3 纳米粒子在吸收层中发挥协同作用，用于制造高性能、稳定的基于 FAPbI3 的过氧化物太阳能电池

过氧化物太阳能电池（PSC）的性能取决于过氧化物吸收层的质量。本研究将油酸（OA）和油胺（OAm）配体封端甲脒碘化铅（FAPbI3）纳米粒子（NPs）加入甲脒碘化铅（FAI）溶液中，该溶液是 FAPbI3 层连续沉积的前驱体之一。FAPbI3-NPs 和封端配体的协同作用大大提高了块状 FAPbI3 包晶石薄膜的结晶度、均匀性和形态。这些改进降低了电荷重组，提高了电荷转移效率，使优化后的 PSC 达到了 25.68% 的显著峰值功率转换效率 (PCE)。此外，这些 PSCs 还表现出良好的稳定性，未封装器件在环境空气（相对湿度 50% ）中可保持 93% 的峰值性能达 1000 小时之久。

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来源期刊

Nano Energy CHEMISTRY, PHYSICAL-NANOSCIENCE & NANOTECHNOLOGY

CiteScore

30.30

自引率

7.40%

发文量

1207

审稿时长

23 days

期刊介绍： Nano Energy is a multidisciplinary, rapid-publication forum of original peer-reviewed contributions on the science and engineering of nanomaterials and nanodevices used in all forms of energy harvesting, conversion, storage, utilization and policy. Through its mixture of articles, reviews, communications, research news, and information on key developments, Nano Energy provides a comprehensive coverage of this exciting and dynamic field which joins nanoscience and nanotechnology with energy science. The journal is relevant to all those who are interested in nanomaterials solutions to the energy problem. Nano Energy publishes original experimental and theoretical research on all aspects of energy-related research which utilizes nanomaterials and nanotechnology. Manuscripts of four types are considered: review articles which inform readers of the latest research and advances in energy science; rapid communications which feature exciting research breakthroughs in the field; full-length articles which report comprehensive research developments; and news and opinions which comment on topical issues or express views on the developments in related fields.