Yang Yongrui, Min Fanyi, Wang Yiyang, Guo Lutong, Long Haoran, Qu Zhiyuan, Zhang Kun, Wang Yang, Yang Juehan, Chen Yu, Meng Lei, Qiao Yali, Song Yanlin
Beijing National Laboratory for Molecular Science, CAS Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.
University of Chinese Academy of Sciences, Beijing, 100049, China.
Adv Mater. 2024 Nov;36(46):e2408448. doi: 10.1002/adma.202408448. Epub 2024 Sep 27.
Organic-inorganic halide perovskite solar cells (PSCs) have attracted significant attention in photovoltaic research, owing to their superior optoelectronic properties and cost-effective manufacturing techniques. However, the unbalanced charge carrier diffusion length in perovskite materials leads to the recombination of photogenerated electrons and holes. The inefficient charge carrier collecting process severely affects the power conversion efficiency (PCE) of the PSCs. Herein, a solution-processed SnO array electron transport layer with precisely tunable micro-nanostructures is fabricated via a bubble-template-assisted approach, serving as both electron transport layers and scaffolds for the perovskite layer. Due to the optimized electron transporting pathway and enlarged perovskite grain size, the PSCs achieve a PCE of 25.35% (25.07% certificated PCE).
有机-无机卤化物钙钛矿太阳能电池（PSCs）因其优异的光电性能和具有成本效益的制造技术，在光伏研究中引起了广泛关注。然而，钙钛矿材料中电荷载流子扩散长度的不平衡导致光生电子和空穴的复合。低效的电荷载流子收集过程严重影响了PSCs的功率转换效率（PCE）。在此，通过气泡模板辅助方法制备了具有精确可调微纳米结构的溶液处理SnO阵列电子传输层，其既作为电子传输层，又作为钙钛矿层的支架。由于优化了电子传输路径并增大了钙钛矿晶粒尺寸，PSCs实现了25.35%的PCE（认证PCE为25.07%）。
