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Protic Amine Carboxylic Acid Ionic Liquids Additives Regulate α-FAPbI3 Phase Transition for High Efficiency Perovskite Solar Cells
Small ( IF 13.0 ) Pub Date : 2023-04-28 , DOI: 10.1002/smll.202302194 Wenjian Shen 1, 2 , Haoyu Cai 1, 2 , Yingjie Kong 1 , Wei Dong 1 , Cong Bai 1 , Guijie Liang 3 , Wangnan Li 3 , Juan Zhao 4 , Fuzhi Huang 1, 2 , Yi-Bing Cheng 1, 2 , Jie Zhong 1, 2
Small ( IF 13.0 ) Pub Date : 2023-04-28 , DOI: 10.1002/smll.202302194 Wenjian Shen 1, 2 , Haoyu Cai 1, 2 , Yingjie Kong 1 , Wei Dong 1 , Cong Bai 1 , Guijie Liang 3 , Wangnan Li 3 , Juan Zhao 4 , Fuzhi Huang 1, 2 , Yi-Bing Cheng 1, 2 , Jie Zhong 1, 2
Affiliation
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The α-phase formamidinium lead tri-iodide (α-FAPbI3) has become the most promising photovoltaic absorber for perovskite solar cells (PSCs) due to its outstanding semiconductor properties and astonishing high efficiency. However, the incomplete crystallization and phase transition of α-FAPbI3 substantially undermine the performance and stability of PSCs. In this work, a series of the protic amine carboxylic acid ion liquids are introduced as the precursor additives to efficiently regulate the crystal growth and phase transition processes of α-FAPbI3. The MA2Pb3I8·2DMSO phase is inhibited in annealing process, which remarkably optimizes the phase transition process of α-FAPbI3. It is noted that the functional groups of carboxyl and ammonium passivate the undercoordinated lead ions, halide vacancies, and organic vacancies, eliminating the deleterious nonradiative recombination. Consequently, the small-area devices incorporated with 2% methylammonium butyrate (MAB) and 1.5% n-butylammonium formate (BAFa) in perovskite show champion efficiencies of 25.10% and 24.52%, respectively. Furthermore, the large-area modules (5 cm × 5 cm) achieve PCEs of 21.26% and 19.27% for MAB and BAFa additives, indicating the great potential for commercializing large-area PSCs.
中文翻译：
质子胺羧酸离子液体添加剂调节高效钙钛矿太阳能电池的 α-FAPbI3 相变
α相甲脒三碘化铅（α-FAPbI 3）因其出色的半导体性能和惊人的高效率而成为钙钛矿太阳能电池（PSC）最有前途的光伏吸收剂。然而，α-FAPbI 3的不完全结晶和相变严重损害了PSC的性能和稳定性。在这项工作中，引入一系列质子胺羧酸离子液体作为前驱体添加剂，以有效调控α-FAPbI 3 的晶体生长和相变过程。退火过程中MA 2 Pb 3 I 8 ·2DMSO相受到抑制，显着优化了α-FAPbI 3的相变过程。值得注意的是，羧基和铵的官能团钝化了配位不足的铅离子、卤化物空位和有机空位，消除了有害的非辐射复合。因此，在钙钛矿中加入 2% 丁酸甲基铵 (MAB) 和 1.5% 甲酸正丁基铵 (BAFa) 的小面积器件分别显示出 25.10% 和 24.52% 的冠军效率。此外，大面积模块（5 cm × 5 cm）对于MAB和BAFa添加剂的PCE分别达到21.26%和19.27%，表明大面积PSC商业化的巨大潜力。
更新日期：2023-04-28
中文翻译：
质子胺羧酸离子液体添加剂调节高效钙钛矿太阳能电池的 α-FAPbI3 相变
α相甲脒三碘化铅（α-FAPbI 3）因其出色的半导体性能和惊人的高效率而成为钙钛矿太阳能电池（PSC）最有前途的光伏吸收剂。然而，α-FAPbI 3的不完全结晶和相变严重损害了PSC的性能和稳定性。在这项工作中，引入一系列质子胺羧酸离子液体作为前驱体添加剂，以有效调控α-FAPbI 3 的晶体生长和相变过程。退火过程中MA 2 Pb 3 I 8 ·2DMSO相受到抑制，显着优化了α-FAPbI 3的相变过程。值得注意的是，羧基和铵的官能团钝化了配位不足的铅离子、卤化物空位和有机空位，消除了有害的非辐射复合。因此，在钙钛矿中加入 2% 丁酸甲基铵 (MAB) 和 1.5% 甲酸正丁基铵 (BAFa) 的小面积器件分别显示出 25.10% 和 24.52% 的冠军效率。此外，大面积模块（5 cm × 5 cm）对于MAB和BAFa添加剂的PCE分别达到21.26%和19.27%，表明大面积PSC商业化的巨大潜力。
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