@article{282cca07984642d09b4a0bf2655b6e7f,
title = "Conjugated polyelectrolyte doped perovskite films with enhanced photovoltaic performance and stability",
abstract = "Perovskite solar cells (PSCs) have achieved great success in the past few years because of outstanding photovoltaic performance. However, the existence of electronic trap states in the perovskite film is an obstacle for the fabrication of high-performance and stable PSCs. Herein, a linear conjugated polyelectrolyte was developed and employed as a dopant to improve the performance and stability of the perovskite film. The PPNNA doping can passivate surface defects to reduce the electronic trap states in the perovskite film, while simultaneously enhancing the electron extraction and transport to achieve high-efficiency solar cells. Furthermore, the PPNNA-doped perovskite film shows better stability from efficient surface passivation. The optimal 0.4% PPNNA-doped device exhibits better photovoltaic efficiency (20.38%) with enhanced device stability as compared to the control device (18.51%). This novel method by doping with the conjugated polyelectrolyte provides a pathway to fabricate high-efficiency and stable inverted PSCs.",
keywords = "Conjugated polyelectrolyte, Dopant, Electron transport, Perovskite solar cell, Surface passivation",
author = "Helin Wang and Jiatao Wu and Jun Song and Junle Qu and Jiarong Lian and Qian, {Peng Cheng} and Wong, {Wai Yeung}",
note = "Funding Information: This work has been partially supported by the National Key R&D Program of China ( 2018YFC0910602 ); the National Natural Science Foundation of China ( 61775145 , 61525503 , 61620106016 , 61835009 ); the China Postdoctoral Science Foundation Funded Project ( 2018M643147 ); (Key) Project of Department of Education of Guangdong Province ( 2016KCXTD007 ); Guangdong Province Key Area R&D Program ( 2019B110233004 ); Natural Science Foundation of Guangdong Province ( 2019A1515011125 ); Science and Technology Project of Shenzhen City ( JCYJ20190808173813204 ). W.-Y. W. would like to thank the Science, Technology and Innovation Committee of Shenzhen Municipality ( JCYJ20180507183413211 ); National Natural Science Foundation of China ( 51873176 ); the Hong Kong Research Grants Council ( PolyU 123384/16P and C5037-18G ); Hong Kong Polytechnic University (1-ZE1C), the Endowed Professorship in Energy from Ms. Clarea Au (847S) and the Research Institute for Smart Energy (RISE) for the financial support. P.-C. Q. thanks the Foundation of Wenzhou Science & Technology Bureau (No. W20170003 ) and the National Natural Science Foundation of China (No. 21828102 ) for the support. Funding Information: This work has been partially supported by the National Key R&D Program of China (2018YFC0910602); the National Natural Science Foundation of China (61775145, 61525503, 61620106016, 61835009); the China Postdoctoral Science Foundation Funded Project (2018M643147); (Key) Project of Department of Education of Guangdong Province (2016KCXTD007); Guangdong Province Key Area R&D Program (2019B110233004); Natural Science Foundation of Guangdong Province (2019A1515011125); Science and Technology Project of Shenzhen City (JCYJ20190808173813204). W.-Y. W. would like to thank the Science, Technology and Innovation Committee of Shenzhen Municipality (JCYJ20180507183413211); National Natural Science Foundation of China (51873176); the Hong Kong Research Grants Council (PolyU 123384/16P and C5037-18G); Hong Kong Polytechnic University (1-ZE1C), the Endowed Professorship in Energy from Ms. Clarea Au (847S) and the Research Institute for Smart Energy (RISE) for the financial support. P.-C. Q. thanks the Foundation of Wenzhou Science & Technology Bureau (No. W20170003) and the National Natural Science Foundation of China (No. 21828102) for the support. Publisher Copyright: {\textcopyright} 2020 Elsevier B.V.",
year = "2021",
month = aug,
day = "1",
doi = "10.1016/j.cej.2020.128068",
language = "English",
volume = "417",
journal = "Chemical Engineering Journal",
issn = "1385-8947",
publisher = "Elsevier",
}