Cation reactivity inhibits perovskite degradation in efficient and stable solar modules

IF 44.7 1区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

Science Pub Date : 2024-10-31 DOI:10.1126/science.ado6619

Yong Ding, Bin Ding, Pengju Shi, Jan Romano-deGea, Yahui Li, Roland C. Turnell-Ritson, Olga A. Syzgantseva, Ilhan Yavuz, Ming Xia, Ruohan Yu, Maria A. Syzgantseva, Jean-Nicolas Audinot, Xiaohe Miao, Xiaobin Liao, Jiantao Li, Patrick Dörflinger, Vladimir Dyakonov, Cheng Liu, Yi Yang, Li Tao, Keith G. Brooks, Andre Slonopas, Jiahong Pan, Lei Zhang, Qinyou An, Yaoguang Rong, Jun Peng, Liming Ding, Enzheng Shi, Liqiang Mai, Songyuan Dai, Kangning Zhao, Jiang Sheng, Rui Wang, Paul J. Dyson, Mohammad Khaja Nazeeruddin

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引用次数: 0

Abstract

Perovskite solar modules (PSMs) show outstanding power conversion efficiencies (PCEs), but long-term operational stability remains problematic. We show that incorporating N,N-dimethylmethyleneiminium chloride into the perovskite precursor solution formed dimethylammonium cation and that previously unobserved methyl tetrahydrotriazinium ([MTTZ]⁺) cation effectively improved perovskite film. The in situ formation of [MTTZ]⁺ cation increased the formation energy of iodine vacancies and enhanced the migration energy barrier of iodide and cesium ions, which suppressed nonradiative recombination, thermal decomposition, and phase segregation processes. The optimized PSMs achieved a record (certified) PCE of 23.2% with an aperture area of 27.2 cm², with a stabilized PCE of 23.0%. The encapsulated PSM retained 87.0% of its initial PCE after ~1900 hours of maximum power point tracking at 85°C and 85% relative humidity under 1.0-sun illumination.

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阳离子反应抑制高效稳定太阳能模块中的过氧化物降解

过氧化物太阳能电池组件（PSM）具有出色的功率转换效率（PCE），但其长期运行稳定性仍存在问题。我们的研究表明，在包晶前驱体溶液中加入 N,N-二甲基亚胺氯化物可形成二甲基铵阳离子，而之前未发现的甲基四氢三嗪（[MTTZ] +）阳离子可有效改善包晶薄膜。MTTZ] + 阳离子的原位形成提高了碘空位的形成能，增强了碘离子和铯离子的迁移能垒，从而抑制了非辐射重组、热分解和相分离过程。优化后的 PSM 在孔径面积为 27.2 cm 2 的情况下，PCE 达到了创纪录的 23.2%，稳定 PCE 为 23.0%。在 85°C 和 85% 相对湿度条件下，在 1.0 太阳光照下，经过约 1900 小时的最大功率点跟踪后，封装 PSM 仍保持了 87.0% 的初始 PCE。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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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