Wafer-scale monolayer MoS2 film integration for stable, efficient perovskite solar cells

IF 44.7 1区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES Science Pub Date : 2025-01-09 DOI:10.1126/science.ado2351

Huachao Zai, Pengfei Yang, Jie Su, Ruiyang Yin, Rundong Fan, Yuetong Wu, Xiao Zhu, Yue Ma, Tong Zhou, Wentao Zhou, Yu Zhang, Zijian Huang, Yiting Jiang, Nengxu Li, Yang Bai, Cheng Zhu, Zhaohui Huang, Jingjing Chang, Qi Chen, Yanfeng Zhang, Huanping Zhou

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Abstract

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 MoS₂ 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 MoS₂/perovskite/MoS₂ 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.

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稳定、高效的钙钛矿太阳能电池的晶片级单层MoS 2薄膜集成

钙钛矿太阳能电池（PSCs）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 2缓冲器。这些膜在物理上阻止钙钛矿离子迁移到载流子输运层，并通过强配位相互作用在化学上稳定了甲脒-碘化铅相。有效的化学钝化是由于Pb-S键的形成，少数载流子通过i型带排列被阻挡。具有MoS 2 /钙钛矿/MoS 2结构的平面p-i-n PSCs（0.074平方厘米）和模块（9.6平方厘米）的PCE分别达到26.2%（认证稳态PCE为25.9%）和22.8%。此外，该器件表现出优异的湿热（85°C和85%相对湿度）稳定性，1200小时后PCE损失为<；5%；高温（85°C）运行稳定性，1200小时后PCE损失为<；4%。

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来源期刊

Science 综合性期刊-综合性期刊

CiteScore

61.10

自引率

0.90%

发文量

审稿时长

2.1 months

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