Zai Huachao, Yang Pengfei, Su Jie, Yin Ruiyang, Fan Rundong, Wu Yuetong, Zhu Xiao, Ma Yue, Zhou Tong, Zhou Wentao, Zhang Yu, Huang Zijian, Jiang Yiting, Li Nengxu, Bai Yang, Zhu Cheng, Huang Zhaohui, Chang Jingjing, Chen Qi, Zhang Yanfeng, Zhou Huanping
Beijing Key Laboratory for Theory and Technology of Advanced Battery Materials, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, School of Materials Science and Engineering, Peking University, Beijing, China.
School of Materials Science and Technology, China University of Geosciences (Beijing), Beijing, China.
Science. 2025 Jan 10;387(6730):186-192. doi: 10.1126/science.ado2351. Epub 2025 Jan 9.
One of the primary challenges in commercializing perovskite solar cells (PSCs) is achieving both high power conversion efficiency (PCE) and sufficient stability. We integrate wafer-scale continuous monolayer MoS buffers at the top and bottom of a perovskite layer through a transfer process. These films physically block ion migration of perovskite into carrier transport layers and chemically stabilize the formamidinium lead iodide phase through strong coordination interaction. Effective chemical passivation results from the formation of Pb-S bonds, and minority carriers are blocked through a type-I band alignment. Planar p-i-n PSCs (0.074 square centimeters) and modules (9.6 square centimeters) with MoS/perovskite/MoS configuration achieve PCEs up to 26.2% (certified steady-state PCE of 25.9%) and 22.8%, respectively. Moreover, the devices show excellent damp heat (85°C and 85% relative humidity) stability with <5% PCE loss after 1200 hours and notable high temperature (85°C) operational stability with <4% PCE loss after 1200 hours.
钙钛矿太阳能电池（PSC）商业化的主要挑战之一是实现高功率转换效率（PCE）和足够的稳定性。我们通过转移工艺在钙钛矿层的顶部和底部集成了晶圆级连续单层MoS缓冲层。这些薄膜物理上阻止了钙钛矿的离子迁移进入载流子传输层，并通过强配位相互作用化学稳定甲脒碘化铅相。有效的化学钝化源于Pb-S键的形成，少数载流子通过I型能带排列被阻挡。具有MoS/钙钛矿/MoS结构的平面p-i-n PSC（0.074平方厘米）和模块（9.6平方厘米）的PCE分别高达26.2%（认证稳态PCE为25.9%）和22.8%。此外，这些器件在1200小时后显示出优异的湿热（85°C和85%相对湿度）稳定性，PCE损失<5%，在1200小时后在85°C的高温下具有显著的运行稳定性，PCE损失<4%。
