Yang, Bowen ORCID: 0000-0002-9471-3452, Suo, Jiajia, Di Giacomo, Francesco ORCID: 0000-0002-2489-5385, Olthof, Selina, Bogachuk, Dmitry, Kim, YeonJu, Sun, Xiaoxiao, Wagner, Lukas ORCID: 0000-0002-6883-5886, Fu, Fan ORCID: 0000-0002-3647-4086, Zakeeruddin, Shaik M., Hinsch, Andreas, Gratzel, Michael, Di Carlo, Aldo and Hagfeldt, Anders (2021). Interfacial Passivation Engineering of Perovskite Solar Cells with Fill Factor over 82% and Outstanding Operational Stability on n-i-p Architecture. ACS Energy Lett., 6 (11). S. 3916 - 3924. WASHINGTON: AMER CHEMICAL SOC. ISSN 2380-8195

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Abstract

Tremendous efforts have been dedicated toward minimizing the open-circuit voltage deficits on perovskite solar cells (PSCs), and the fill factors are still relatively low. This hinders their further application in large scalable modules. Herein, we employ a newly designed ammonium salt, cyclohexylethylammonium iodide (CEAI), for interfacial engineering between the perovskite and hole-transporting layer (HTL), which enhanced the fill factor to 82.6% and consequent PCE of 23.57% on the target device. This can be associated with a reduction of the trap-assisted recombination rate at the 3D perovskite surface, via formation of a 2D perovskite interlayer. Remarkably, the property of the 2D perovskite interlayer along with the cyclohexylethyl group introduced by CEAI treatment also determines a pronounced enhancement in the surface hydrophobicity, leading to an outstanding stability of over 96% remaining efficiency of the passivated devices under maximum power point tracking with one sun illumination under N-2 atmosphere at room temperature after 1500 h.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Yang, BowenUNSPECIFIEDorcid.org/0000-0002-9471-3452UNSPECIFIED
Suo, JiajiaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Di Giacomo, FrancescoUNSPECIFIEDorcid.org/0000-0002-2489-5385UNSPECIFIED
Olthof, SelinaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bogachuk, DmitryUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kim, YeonJuUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Sun, XiaoxiaoUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Wagner, LukasUNSPECIFIEDorcid.org/0000-0002-6883-5886UNSPECIFIED
Fu, FanUNSPECIFIEDorcid.org/0000-0002-3647-4086UNSPECIFIED
Zakeeruddin, Shaik M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Hinsch, AndreasUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Gratzel, MichaelUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Di Carlo, AldoUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Hagfeldt, AndersUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-596647
DOI: 10.1021/acsenergylett.1c01811
Journal or Publication Title: ACS Energy Lett.
Volume: 6
Number: 11
Page Range: S. 3916 - 3924
Date: 2021
Publisher: AMER CHEMICAL SOC
Place of Publication: WASHINGTON
ISSN: 2380-8195
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
EFFICIENCY; VOLTAGEMultiple languages
Chemistry, Physical; Electrochemistry; Energy & Fuels; Nanoscience & Nanotechnology; Materials Science, MultidisciplinaryMultiple languages
URI: http://kups.ub.uni-koeln.de/id/eprint/59664

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