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摘要:
Formamidinium lead triiodide (FAPbI3) is a research hotspot in perovskite photovoltaics due to its broad light ab-sorption and proper thermal stability.However,quite a few researches focused on the stability of the FAPbI3 perovskite precursor solutions.Besides,the most efficient FAPbI3 layers are prepared by the spin-coating method,which is limited to the size of the device.Herein,the stability of FAPbI3 perovskite solution with methylammonium chloride (MACl) or cesium chloride (CsCl) additive is studied for preparing perovskite film through an upscalable blade-coating method.Each additive works well for achieving a high-quality FAPbI3 film,resulting in efficient carbon electrode perovskite solar cells(pero-SCs) in the ambient condition.However,the perovskite solution with MACl additive shows poor aging stability that no α-FAPbI3 phase is observed when the solution is aged over one week.While the perovskite solution with CsCl additive shows promising aging stability that it still forms high-quality pure α-FAPbI3 perovskite film even the solution is aged over one month.During the solution aging process,the MACl could be decomposed into methylamine which will form some unfavored intermediated phase inducing δ-phase FAPbI3.Whereas,replacing MACl with CsCl could effectively solve this issue.Our founding shows that there is a great need to develop a non-MACl FAPbI3 perovskite precursor solution for cost-effective preparation of pero-SCs.
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篇名 Stabilization of formamidinium lead iodide perovskite precursor solution for blade-coating efficient carbon electrode perovskite solar cells
来源期刊 中国物理B(英文版) 学科
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年,卷(期) 2021,(8) 所属期刊栏目 RAPID COMMUNICATION
研究方向 页码范围 197-203
页数 7页 分类号
字数 语种 英文
DOI 10.1088/1674-1056/abfbcb
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中国物理B(英文版)
月刊
1674-1056
11-5639/O4
北京市中关村中国科学院物理研究所内
eng
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17050
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27962
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