Chen Qian, Ma Mengen, Li Weile, Wang Yao, Gao Yin, Li Yang, Liu Chong
School of Electronics and Information Engineering, Wuyi University, Jiangmen 529020, China.
Institute of New Energy Technology, College of Physics & Optoelectronic Engineering, Jinan University, Guangzhou 510632, China.
ACS Appl Mater Interfaces. 2025 Jan 22;17(3):5193-5201. doi: 10.1021/acsami.4c19238. Epub 2025 Jan 8.
The addition of organic cationic iodides to form low-dimensional perovskite is an essential strategy for defect passivation in perovskite solar cells (PSCs). Specially, the 2D/3D perovskite structure can combine the stability of 2D perovskite and the high charge transport performance of 3D perovskite. Here, we introduced phenylammonium hydroiodide salts with different alkyl chain lengths into PSCs precursor solution to research the influence on formation of perovskite thin films and the photovoltaic performance of PSCs. As a result, the champion power conversion efficiency (PCE) of PSCs was increased to 22.68% by incorporation of the organic cation phenylpropyl ammonium iodide (PPAI) with the best alkyl chain length. We further fabricated the perovskite solar modules (PSMs) with an aperture area of 21 cm, achieving an impressive efficiency of 21.65% with excellent stability that maintaining 89% of its initial efficiency after 1000 h of maximum power point tracking.
添加有机阳离子碘化物以形成低维钙钛矿是钙钛矿太阳能电池（PSC）中缺陷钝化的重要策略。特别地，二维/三维钙钛矿结构可以结合二维钙钛矿的稳定性和三维钙钛矿的高电荷传输性能。在此，我们将不同烷基链长度的苯基碘化铵盐引入PSC前驱体溶液中，以研究其对钙钛矿薄膜形成和PSC光伏性能的影响。结果，通过掺入具有最佳烷基链长度的有机阳离子苯基丙基碘化铵（PPAI），PSC的最佳功率转换效率（PCE）提高到了22.68%。我们进一步制备了孔径面积为21平方厘米的钙钛矿太阳能组件（PSM），实现了令人印象深刻的21.65%的效率，并且具有出色的稳定性，在最大功率点跟踪1000小时后仍保持其初始效率的89%。
