用于高性能单结和串联钙钛矿太阳能电池的合理设计通用钝化剂。
Rationally designed universal passivator for high-performance single-junction and tandem perovskite solar cells.
作者信息
Zhang Zuolin, Feng Yinsu, Ding Jike, Ma Quanxing, Zhang Hong, Zhang Jiajia, Li Mengjia, Geng Taoran, Gao Wenhuan, Wang Yang, Zhang Boxue, Pauporté Thierry, Tang Jian-Xin, Chen Hongjian, Chen Jiangzhao, Chen Cong
机构信息
State Key Laboratory of Reliability and Intelligence of Electrical Equipment, School of Materials Science and Engineering, Hebei University of Technology, Tianjin, China.
State Key Laboratory of Photovoltaic Science and Technology, Shanghai Frontiers Science Research Base of Intelligent Optoelectronics and Perception, Institute of Optoelectronics, Fudan University, Shanghai, China.
出版信息
Nat Commun. 2025 Jan 17;16(1):753. doi: 10.1038/s41467-025-56068-6.
Interfacial trap-assisted nonradiative recombination hampers the development of metal halide perovskite solar cells (PSCs). Herein, we report a rationally designed universal passivator to realize highly efficient and stable single junction and tandem PSCs. Multiple defects are simultaneously passivated by the synergistic effect of anion and cation. Moreover, the defect healing effect is precisely modulated by carefully controlling the number of hydrogen atoms on cations and steric hindrance. Due to minimized interfacial energy loss, L-valine benzyl ester p-toluenesulfonate (VBETS) modified inverted PSCs deliver a power conversion efficiency (PCE) of 26.28% using vacuum flash processing technology. Moreover, by suppressing carrier recombination, the large-area modules with an aperture area of 32.144 cm and perovskite/Si tandem solar cells coupled with VBETS passivation deliver a PCE of 21.00% and 30.98%, respectively. This work highlights the critical role of the number of hydrogen atoms and steric hindrance in designing molecular modulators to advance the PCE and stability of PSCs.
界面陷阱辅助的非辐射复合阻碍了金属卤化物钙钛矿太阳能电池（PSC）的发展。在此，我们报道了一种合理设计的通用钝化剂，以实现高效且稳定的单结和串联PSC。阴离子和阳离子的协同作用同时钝化了多个缺陷。此外，通过仔细控制阳离子上的氢原子数量和空间位阻，可以精确调节缺陷修复效果。由于界面能量损失最小化，使用真空闪蒸处理技术，L-缬氨酸苄酯对甲苯磺酸盐（VBETS）修饰的倒置PSC的功率转换效率（PCE）达到26.28%。此外，通过抑制载流子复合，孔径面积为32.144平方厘米的大面积组件以及采用VBETS钝化的钙钛矿/硅串联太阳能电池的PCE分别达到21.00%和30.98%。这项工作突出了氢原子数量和空间位阻在设计分子调节剂以提高PSC的PCE和稳定性方面的关键作用。
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