Optimization of crystallization dynamics in wide-bandgap bromine–iodine perovskite films for high-performance perovskite–organic tandem solar cells†

IF 32.4 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Energy & Environmental Science Pub Date : 2025-04-22 DOI:10.1039/D5EE00264H

Zonglong Song, Jiangfeng Wang, Yuqi Bao, Jie Zeng, Deng Wang, Jiang He, Peide Zhu, Bo Jiang, Zhixin Liu, Siru He, Yanna Hou, Ziyang Hu, Chen Xie, Yongsheng Chen, Yongsheng Liu, Xingzhu Wang and Baomin Xu

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Abstract

The development of efficient and stable wide-bandgap (WBG) bromine–iodine halide perovskites (Br > 20%) is crucial for enhancing the performance of tandem solar cells. Nonetheless, phase separation of I–Br in WBG perovskites under illumination and heating significantly hinders the advancement of tandem devices. This phenomenon is primarily attributed to the uneven spatial distribution of halide ions in WBG films. Moroxydine hydrochloride was introduced into 1.85 eV I–Br mixed WBG perovskite films, effectively optimizing the crystallization dynamics of the perovskite and improving the film stability. Through this approach, a 1.85 eV WBG perovskite solar cell (PSC) was successfully fabricated, achieving a power conversion efficiency (PCE) of 18.76%, an open-circuit voltage (V_OC) of 1.387 V, and remarkable operational stability. When applied to perovskite–organic tandem solar cells, this method led to devices with a PCE of 25.98% and a V_OC of 2.210 V, setting a new record for the highest V_OC reported to date.

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高性能钙钛矿-有机串联太阳能电池用宽禁带溴碘钙钛矿薄膜结晶动力学优化

高效、稳定的宽带隙溴碘卤化钙钛矿(Br >；20%)对于提高串联太阳能电池的性能至关重要。然而，在光照和加热条件下，WBG钙钛矿中I-Br的相分离严重阻碍了串联器件的发展。这种现象主要是由于卤化物离子在WBG薄膜中的空间分布不均匀所致。将盐酸莫oxydine引入到1.85 eV I-Br混合WBG钙钛矿薄膜中，有效地优化了钙钛矿的结晶动力学，提高了薄膜的稳定性。通过该方法，成功制备了1.85 eV WBG钙钛矿太阳能电池（PSC），功率转换效率（PCE）为18.76%，开路电压（VOC）为1.387 V，工作稳定性显著。当应用于钙钛矿-有机串联太阳能电池时，该方法的器件PCE为25.98%，VOC为2.210 V，创下了迄今为止报道的最高VOC的新记录。

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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).