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Carboxylic ester-terminated fulleropyrrolidine as an efficient electron transport material for inverted perovskite solar cells
Chang, Junwei; Wang, Ying-Chiao; Song, Changjian; Zhu, Liping; Guo, Qiang; Fang, Junfeng
2018
发表期刊JOURNAL OF MATERIALS CHEMISTRY C
卷号6期号:26页码:6982-6987
摘要The interfacial contacts between perovskite crystals and metal electrodes play a significant role in efficient charge transfer in perovskite solar cells (PSCs). In this work, C-60 pyrrolidine tris-acid ethyl ester (CPTA-E) has been employed to form a uniform electron transport layer (ETL) covering the perovskite surface in p-i-n-structured PSCs to replace the traditional (6,6)-phenyl-C-61-butyric acid methyl ester (PCBM) ETL. X-ray photoelectron spectroscopy analysis of the perovskite/CPTA-E interface reveals that there are strong coordination interactions between the perovskite and CPTA-E, which are beneficial for the adhesion of the CPTA-E ETL on the perovskite surface. On the other hand, steady-state photoluminescence and time-resolved photoluminescence studies of the perovskite films with different quenching layers confirm that CPTA-E ETL has a preferable charge quenching effect compared to the PCBM ETL, which suggests that the CPTA-E ETL has a superior electron extraction and transport ability. The corresponding CPTA-E ETL-based device exhibits a champion power conversion efficiency (PCE) of 17.44% with less hysteresis. Moreover, the steady-state photocurrent output of the CPTA-E-containing PSC is prolonged compared to that of the PCBM-based device. Therefore, this work provides a viable strategy to design suitable electron transport materials for high-performance PSCs.
关键词Performance Layer Iodide Enhancement Ch3nh3pbi3 Polymer Crystallization Deposition Lengths Film
学科领域Science & Technology - Other Topics ; Materials Science
语种英语
文献类型期刊论文
条目标识符http://ir.nimte.ac.cn/handle/174433/17317
专题2018专题
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GB/T 7714
Chang, Junwei,Wang, Ying-Chiao,Song, Changjian,et al. Carboxylic ester-terminated fulleropyrrolidine as an efficient electron transport material for inverted perovskite solar cells[J]. JOURNAL OF MATERIALS CHEMISTRY C,2018,6(26):6982-6987.
APA Chang, Junwei,Wang, Ying-Chiao,Song, Changjian,Zhu, Liping,Guo, Qiang,&Fang, Junfeng.(2018).Carboxylic ester-terminated fulleropyrrolidine as an efficient electron transport material for inverted perovskite solar cells.JOURNAL OF MATERIALS CHEMISTRY C,6(26),6982-6987.
MLA Chang, Junwei,et al."Carboxylic ester-terminated fulleropyrrolidine as an efficient electron transport material for inverted perovskite solar cells".JOURNAL OF MATERIALS CHEMISTRY C 6.26(2018):6982-6987.
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