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Molecular Engineered Hole-Extraction Materials to Enable Dopant-Free, Efficient p-i-n Perovskite Solar Cells

Chen, Huanle and Fu, Weifei and Huang, Chuyi and Zhang, Zhongqiang and Li, Shuixing and Ding, Feizhi and Shi, Minmin and Li, Chang-Zhi and Jen, Alex K.-Y. and Chen, Hongzheng (2017) Molecular Engineered Hole-Extraction Materials to Enable Dopant-Free, Efficient p-i-n Perovskite Solar Cells. Advanced Energy Materials, 7 (18). Art. No. 1700012. ISSN 1614-6832. http://resolver.caltech.edu/CaltechAUTHORS:20170512-105618299

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Abstract

Two hole-extraction materials (HEMs), TPP-OMeTAD and TPP-SMeTAD, have been developed to facilitate the fabrication of efficient p-i-n perovskite solar cells (PVSCs). By replacing the oxygen atom on HEM with sulfur (from TPP-OMeTAD to TPP-SMeTAD), it effectively lowers the highest occupied molecular orbital of the molecule and provides stronger Pb-S interaction with perovskites, leading to efficient charge extraction and surface traps passivation. The TPP-SMeTAD-based PVSCs exhibit both improved photovoltaic performance and reduced hysteresis in p-i-n PVSCs over those based on TPP-OMeTAD. This work not only provides new insights on creating perovskite-HEM heterojunction but also helps in designing new HEM to enable efficient organic–inorganic hybrid PVSCs.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1002/aenm.201700012DOIArticle
http://onlinelibrary.wiley.com/doi/10.1002/aenm.201700012/abstractPublisherArticle
Additional Information:© 2017 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim. Version of record online: 12 May 2017; Manuscript Revised: 19 March 2017; Manuscript Received: 2 January 2017. H.C. and W.F. contributed equally to this work. This research was funded by National Natural Science Foundation of China (Nos. 51473142, 21674093, and 51620105006), 973 program (No. 2014CB643503), and International Science and Technology Cooperation Program of China (ISTCP) (Grant No. 2016YFE0102900). C.-Z.L. thanks the support by the Young 1000 Talents Global Recruitment Program of China and 100 Talents Program of Zhejiang University. A.K.-Y.J. thanks the Boeing-Johnson Foundation for its support. The authors declare no conflict of interest.
Funders:
Funding AgencyGrant Number
National Natural Science Foundation of China51473142
National Natural Science Foundation of China21674093
National Natural Science Foundation of China51620105006
973 Program2014CB643503
International Science and Technology Cooperation Program of China (ISTCP)2016YFE0102900
Young 1000 Talents Global Recruitment Program of ChinaUNSPECIFIED
Zhejiang UniversityUNSPECIFIED
Boeing-Johnson FoundationUNSPECIFIED
Subject Keywords:hole-extraction materials; molecular engineering; perovskite solar cells; sulfur atoms
Record Number:CaltechAUTHORS:20170512-105618299
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20170512-105618299
Official Citation:H. Chen, W. Fu, C. Huang, Z. Zhang, S. Li, F. Ding, M. Shi, C.-Z. Li, A. K.-Y. Jen, H. Chen, Adv. Energy Mater. 2017, 7, 1700012. https://doi.org/10.1002/aenm.201700012
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:77409
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:12 May 2017 19:56
Last Modified:20 Oct 2017 17:05

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