Lai, Huagui, Luo, Jincheng, Zwirner, Yannick, Olthof, Selina ORCID: 0000-0002-8871-1549, Wieczorek, Alexander ORCID: 0000-0002-1025-128X, Ye, Fangyuan, Jeangros, Quentin, Yin, Xinxing, Akhundova, Fatima, Ma, Tianshu, He, Rui, Kothandaraman, Radha K., Chin, Xinyu, Gilshtein, Evgeniia ORCID: 0000-0001-5938-2523, Muller, Andre, Wang, Changlei, Thiesbrummel, Jarla ORCID: 0000-0001-6165-1374, Siol, Sebastian ORCID: 0000-0002-0907-6525, Prieto, Jose Marquez, Unold, Thomas, Stolterfoht, Martin, Chen, Cong, Tiwari, Ayodhya N., Zhao, Dewei ORCID: 0000-0001-7914-6288 and Fu, Fan ORCID: 0000-0002-3647-4086 (2022). High-Performance Flexible All-Perovskite Tandem Solar Cells with Reduced V-OC-Deficit in Wide-Bandgap Subcell. Adv. Energy Mater., 12 (45). WEINHEIM: WILEY-V C H VERLAG GMBH. ISSN 1614-6840

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Abstract

Among various types of perovskite-based tandem solar cells (TSCs), all-perovskite TSCs are of particular attractiveness for building- and vehicle-integrated photovoltaics, or space energy areas as they can be fabricated on flexible and lightweight substrates with a very high power-to-weight ratio. However, the efficiency of flexible all-perovskite tandems is lagging far behind their rigid counterparts primarily due to the challenges in developing efficient wide-bandgap (WBG) perovskite solar cells on the flexible substrates as well as their low open-circuit voltage (V-OC). Here, it is reported that the use of self-assembled monolayers as hole-selective contact effectively suppresses the interfacial recombination and allows the subsequent uniform growth of a 1.77 eV WBG perovskite with superior optoelectronic quality. In addition, a postdeposition treatment with 2-thiopheneethylammonium chloride is employed to further suppress the bulk and interfacial recombination, boosting the V-OC of the WBG top cell to 1.29 V. Based on this, the first proof-of-concept four-terminal all-perovskite flexible TSC with a power conversion efficiency of 22.6% is presented. When integrating into two-terminal flexible tandems, 23.8% flexible all-perovskite TSCs with a superior V-OC of 2.1 V is achieved, which is on par with the V-OC reported on the 28% all-perovskite tandems grown on the rigid substrate.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Lai, HuaguiUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Luo, JinchengUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Zwirner, YannickUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Olthof, SelinaUNSPECIFIEDorcid.org/0000-0002-8871-1549UNSPECIFIED
Wieczorek, AlexanderUNSPECIFIEDorcid.org/0000-0002-1025-128XUNSPECIFIED
Ye, FangyuanUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Jeangros, QuentinUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Yin, XinxingUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Akhundova, FatimaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ma, TianshuUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
He, RuiUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kothandaraman, Radha K.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Chin, XinyuUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Gilshtein, EvgeniiaUNSPECIFIEDorcid.org/0000-0001-5938-2523UNSPECIFIED
Muller, AndreUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Wang, ChangleiUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Thiesbrummel, JarlaUNSPECIFIEDorcid.org/0000-0001-6165-1374UNSPECIFIED
Siol, SebastianUNSPECIFIEDorcid.org/0000-0002-0907-6525UNSPECIFIED
Prieto, Jose MarquezUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Unold, ThomasUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Stolterfoht, MartinUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Chen, CongUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Tiwari, Ayodhya N.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Zhao, DeweiUNSPECIFIEDorcid.org/0000-0001-7914-6288UNSPECIFIED
Fu, FanUNSPECIFIEDorcid.org/0000-0002-3647-4086UNSPECIFIED
URN: urn:nbn:de:hbz:38-693086
DOI: 10.1002/aenm.202202438
Journal or Publication Title: Adv. Energy Mater.
Volume: 12
Number: 45
Date: 2022
Publisher: WILEY-V C H VERLAG GMBH
Place of Publication: WEINHEIM
ISSN: 1614-6840
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
OPEN-CIRCUIT VOLTAGE; MONOLAYERS; EFFICIENCY; AU(111); SOLVENTMultiple languages
Chemistry, Physical; Energy & Fuels; Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed MatterMultiple languages
URI: http://kups.ub.uni-koeln.de/id/eprint/69308

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