Research (Jan 2020)
Origin of High Efficiency and Long-Term Stability in Ionic Liquid Perovskite Photovoltaic
- Lingfeng Chao,
- Tingting Niu,
- Hao Gu,
- Yingguo Yang,
- Qi Wei,
- Yingdong Xia,
- Wei Hui,
- Shouwei Zuo,
- Zhaohua Zhu,
- Chengjie Pei,
- Xiaodong Li,
- Jing Zhang,
- Junfeng Fang,
- Guichuan Xing,
- Hai Li,
- Xiao Huang,
- Xingyu Gao,
- Chenxin Ran,
- Lin Song,
- Li Fu,
- Yonghua Chen,
- Wei Huang
Affiliations
- Lingfeng Chao
- Frontiers Science Center for Flexible Electronics, Xi’an Institute of Flexible Electronics (IFE) and Xi’an Institute of Biomedical Materials & Engineering, Northwestern Polytechnical University, 127 West Youyi Road, Xi’an 710072, China
- Tingting Niu
- Frontiers Science Center for Flexible Electronics, Xi’an Institute of Flexible Electronics (IFE) and Xi’an Institute of Biomedical Materials & Engineering, Northwestern Polytechnical University, 127 West Youyi Road, Xi’an 710072, China
- Hao Gu
- Key Laboratory of Flexible Electronics (KLOFE) & Institution of Advanced Materials (IAM), Nanjing Tech University (Nanjing Tech), Nanjing, 211816 Jiangsu, China
- Yingguo Yang
- Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201204, China
- Qi Wei
- Frontiers Science Center for Flexible Electronics, Xi’an Institute of Flexible Electronics (IFE) and Xi’an Institute of Biomedical Materials & Engineering, Northwestern Polytechnical University, 127 West Youyi Road, Xi’an 710072, China
- Yingdong Xia
- Key Laboratory of Flexible Electronics (KLOFE) & Institution of Advanced Materials (IAM), Nanjing Tech University (Nanjing Tech), Nanjing, 211816 Jiangsu, China
- Wei Hui
- Key Laboratory of Flexible Electronics (KLOFE) & Institution of Advanced Materials (IAM), Nanjing Tech University (Nanjing Tech), Nanjing, 211816 Jiangsu, China
- Shouwei Zuo
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
- Zhaohua Zhu
- Key Laboratory of Flexible Electronics (KLOFE) & Institution of Advanced Materials (IAM), Nanjing Tech University (Nanjing Tech), Nanjing, 211816 Jiangsu, China
- Chengjie Pei
- Key Laboratory of Flexible Electronics (KLOFE) & Institution of Advanced Materials (IAM), Nanjing Tech University (Nanjing Tech), Nanjing, 211816 Jiangsu, China
- Xiaodong Li
- School of Physics and Electronic Science, Ministry of Education, Nanophotonics &Advanced Instrument Engineering Research Center, East China Normal University, Shanghai 200062, China
- Jing Zhang
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
- Junfeng Fang
- School of Physics and Electronic Science, Ministry of Education, Nanophotonics &Advanced Instrument Engineering Research Center, East China Normal University, Shanghai 200062, China
- Guichuan Xing
- Institute of Applied Physics and Materials Engineering, University of Macau, Macau, Macao SAR 999078, China
- Hai Li
- Key Laboratory of Flexible Electronics (KLOFE) & Institution of Advanced Materials (IAM), Nanjing Tech University (Nanjing Tech), Nanjing, 211816 Jiangsu, China
- Xiao Huang
- Key Laboratory of Flexible Electronics (KLOFE) & Institution of Advanced Materials (IAM), Nanjing Tech University (Nanjing Tech), Nanjing, 211816 Jiangsu, China
- Xingyu Gao
- Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201204, China
- Chenxin Ran
- Frontiers Science Center for Flexible Electronics, Xi’an Institute of Flexible Electronics (IFE) and Xi’an Institute of Biomedical Materials & Engineering, Northwestern Polytechnical University, 127 West Youyi Road, Xi’an 710072, China
- Lin Song
- Frontiers Science Center for Flexible Electronics, Xi’an Institute of Flexible Electronics (IFE) and Xi’an Institute of Biomedical Materials & Engineering, Northwestern Polytechnical University, 127 West Youyi Road, Xi’an 710072, China
- Li Fu
- Frontiers Science Center for Flexible Electronics, Xi’an Institute of Flexible Electronics (IFE) and Xi’an Institute of Biomedical Materials & Engineering, Northwestern Polytechnical University, 127 West Youyi Road, Xi’an 710072, China
- Yonghua Chen
- Frontiers Science Center for Flexible Electronics, Xi’an Institute of Flexible Electronics (IFE) and Xi’an Institute of Biomedical Materials & Engineering, Northwestern Polytechnical University, 127 West Youyi Road, Xi’an 710072, China; Key Laboratory of Flexible Electronics (KLOFE) & Institution of Advanced Materials (IAM), Nanjing Tech University (Nanjing Tech), Nanjing, 211816 Jiangsu, China
- Wei Huang
- Frontiers Science Center for Flexible Electronics, Xi’an Institute of Flexible Electronics (IFE) and Xi’an Institute of Biomedical Materials & Engineering, Northwestern Polytechnical University, 127 West Youyi Road, Xi’an 710072, China; Key Laboratory of Flexible Electronics (KLOFE) & Institution of Advanced Materials (IAM), Nanjing Tech University (Nanjing Tech), Nanjing, 211816 Jiangsu, China; Key Laboratory for Organic Electronics & Information Displays (KLOEID) and Institute of Advanced Materials (IAM), Nanjing University of Posts and Telecommunications, Nanjing, 210023 Jiangsu, China
- DOI
- https://doi.org/10.34133/2020/2616345
- Journal volume & issue
-
Vol. 2020
Abstract
Environment-friendly protic amine carboxylic acid ionic liquids (ILs) as solvents is a significant breakthrough with respect to traditional highly coordinating and toxic solvents in achieving efficient and stable perovskite solar cells (PSCs) with a simple one-step air processing and without an antisolvent treatment approach. However, it remains mysterious for the improved efficiency and stability of PSCs without any passivation strategy. Here, we unambiguously demonstrate that the three functions of solvents, additive, and passivation are present for protic amine carboxylic acid ILs. We found that the ILs have the capability to dissolve a series of perovskite precursors, induce oriented crystallization, and chemically passivate the grain boundaries. This is attributed to the unique molecular structure of ILs with carbonyl and amine groups, allowing for strong interaction with perovskite precursors by forming C=O…Pb chelate bonds and N-H…I hydrogen bonds in both solution and film. This finding is generic in nature with extension to a wide range of IL-based perovskite optoelectronics.
