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Charge-transfer induced multifunctional BCP:Ag complexes for semi-transparent perovskite solar cells with a record fill factor of 80.1%
Ying, Zhiqin1,2,3; Yang, Xi2; Zheng, Jingming2; Zhu, Yudong1; Xiu, Jingwei1; Chen, Wei1; Shou, Chunhui4; Sheng, Jiang2; Zeng, Yuheng2; Yan, Baojie2; Pan, Hui3; Ye, Jichun2; He, Zhubing1
2021-05-28
Source PublicationJournal of Materials Chemistry A
ISSN2050-7488
Volume9Issue:20Pages:12009-12018
AbstractFor semi-transparent perovskite solar cells (PSCs), the bombardment during the deposition of a transparent conductive oxide would inevitably damage the underlying soft materials, thereby inducing a high density of defects and creating an unfavorable band mismatch at the interface. Although interfacial buffer layers can be adopted to alleviate this bombardment damage, the device performance is still limited by the inferior fill factor (FF) due to the increased series resistance and the decreased carrier collection. In this work, a charge transfer induced 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline (BCP):Ag complex is employed to mediate the electrical contact between a C60 electron-transport layer and sputtered indium-zinc oxide (IZO) top electrode. We demonstrate that the multifunctional BCP:Ag complex can (1) reduce the electron extraction barrier by pulling up the Fermi level of BCP, (2) create beneficial gap states for electron transport, (3) serve as a hole blocking layer to suppress charge recombination, and (4) protect the C60 underlayer from the sputtering damage. As a result, the optimized electrical contact at the C60/BCP:Ag/IZO interface significantly recovered the FF of the inverted semi-transparent perovskite solar cell from 71.8% to 80.1%, yielding a device efficiency of 18.19%. By using a 23.19% efficient silicon solar cell, we also demonstrate a four-terminal tandem configuration with a total efficiency of 27.59%.
DOI10.1039/d1ta01180d
URLView the original
Language英語English
Scopus ID2-s2.0-85106584228
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Cited Times [WOS]:2   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity of Macau
Affiliation1.Department of Materials Science and Engineering, Shenzhen Key Laboratory of Full Spectral Solar Electricity Generation (FSSEG), Southern University of Science and Technology, Shenzhen, Guangdong, No. 1088, Xueyuan Rd., 518055, China
2.Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences (CAS), Ningbo City, 315201, China
3.Institute of Applied Physics and Materials Engineering, University of Macau, Macao, 999078, Macao
4.Zhejiang Energy Group RandD, Hangzhou, 310003, China
First Author AffilicationINSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING
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GB/T 7714
Ying, Zhiqin,Yang, Xi,Zheng, Jingming,et al. Charge-transfer induced multifunctional BCP:Ag complexes for semi-transparent perovskite solar cells with a record fill factor of 80.1%[J]. Journal of Materials Chemistry A,2021,9(20):12009-12018.
APA Ying, Zhiqin,Yang, Xi,Zheng, Jingming,Zhu, Yudong,Xiu, Jingwei,Chen, Wei,Shou, Chunhui,Sheng, Jiang,Zeng, Yuheng,Yan, Baojie,Pan, Hui,Ye, Jichun,&He, Zhubing.(2021).Charge-transfer induced multifunctional BCP:Ag complexes for semi-transparent perovskite solar cells with a record fill factor of 80.1%.Journal of Materials Chemistry A,9(20),12009-12018.
MLA Ying, Zhiqin,et al."Charge-transfer induced multifunctional BCP:Ag complexes for semi-transparent perovskite solar cells with a record fill factor of 80.1%".Journal of Materials Chemistry A 9.20(2021):12009-12018.
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