MACl Induced Intermediate Engineering for High-performance Mixed Cation Perovskite Solar Cells.

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ID: 95121
2020
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Abstract
Recently, mixed-cation perovskite has been extensively used for high-performance solar cells. Nevertheless, the mixed-cation perovskite fabricated through the existing method always suffers phase stability and much trap density. Herein, we demonstrate a facile intermediate engineering approach to improve the quality of mixed-cation perovskite. Varying concentrations of MACl is used to treat FAXMA1-XPbI3 intermediates. It is noted that MACl has a strong impact on the crystallization kinetics, charge carrier dynamics as well as defect density of obtained perovskite. The mixed-cation perovskite treated with 20 mg mL-1 MACl yields large grain size, highly uniform morphology, better crystalline stability. Subsequently, the device with acquired high-quality mixed-cation perovskite shows a high efficiency of 20.40%, which is obviously higher than that obtained from the traditional non-treated method. Moreover, the device prepared through the developed method could retain over 85% of the initial efficiency after 860 h at room temperature.
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mateen2020maclacs Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Mateen, Muhammad;Arain, Zulqarnain;Yang, Yi;Liu, Xuepeng;Ma, Shuang;Liu, Cheng;Ding, Yong;Ding, Xihong;Cai, Molang;Dai, Songyuan;
Journal ACS applied materials & interfaces
Year 2020
DOI
10.1021/acsami.9b22719
URL
Keywords
hydrogen photosystem-ii energy system solar light conversion

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