Photomechanically accelerated degradation of perovskite solar cells

IF 32.4 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Energy & Environmental Science Pub Date : 2025-01-07 DOI:10.1039/d4ee04878d

Haonan Wang, Qing Li, Yan Zhu, Xinyuan Sui, Xiulian Fan, Miaoyu Lin, Yifeng Shi, Yichu Zheng, Haiyang Yuan, Yu Zhou, Haibao Jin, Huagui Yang, Yu Hou, Shuang Yang

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引用次数: 0

Abstract

Understanding the origin of intrinsic instability for metal halide perovskites is indispensable for their advancement in opto-electronic applications. Here, we report a photomechanically accelerated degradation mechanism of perovskite thin films, in which the lattice expansion driven by light illumination governs the degradation kinetics. The dynamic lattice evolution under illumination makes the perovskite grains to be crowded with large local strain near grain boundaries (GBs), which facilitates defect formation and iodine-component loss at this region. We show that the physical separation of each perovskite grains using trans-polyisoprene (TPI) can circumvent the photomechanical damage at GBs, and attain T97 of 1000 h under continuous one sun illumination at 55 °C in solar cell devices. The present results emphasize the nontrivial role of dynamic lattice deformation in the decomposition of perovskite thin films, and will open new possibilities to further improve the intrinsic stability of solar cells.

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来源期刊

Energy & Environmental Science 化学-工程：化工

CiteScore

50.50

自引率

2.20%

发文量

349

审稿时长

2.2 months

期刊介绍： Energy & Environmental Science, a peer-reviewed scientific journal, publishes original research and review articles covering interdisciplinary topics in the (bio)chemical and (bio)physical sciences, as well as chemical engineering disciplines. Published monthly by the Royal Society of Chemistry (RSC), a not-for-profit publisher, Energy & Environmental Science is recognized as a leading journal. It boasts an impressive impact factor of 8.500 as of 2009, ranking 8th among 140 journals in the category "Chemistry, Multidisciplinary," second among 71 journals in "Energy & Fuels," second among 128 journals in "Engineering, Chemical," and first among 181 scientific journals in "Environmental Sciences." Energy & Environmental Science publishes various types of articles, including Research Papers (original scientific work), Review Articles, Perspectives, and Minireviews (feature review-type articles of broad interest), Communications (original scientific work of an urgent nature), Opinions (personal, often speculative viewpoints or hypotheses on current topics), and Analysis Articles (in-depth examination of energy-related issues).