Interfacial Engineering of Wide-Bandgap Perovskites for Efficient Perovskite/CZTSSe Tandem Solar Cells

Wang, Deng1; Guo, Hongling2; Wu, Xin3; Deng, Xiang1; Li, Fengzhu1; Li, Zhen3; Lin, Francis3; Zhu, Zonglong3,4; Zhang, Yi2; Xu, Baomin5; Jen, Alex K. Y.1,3,4,6

2021-10-01

10.1002/adfm.202107359

ADVANCED FUNCTIONAL MATERIALS   影响因子和分区

1616-301X

1616-3028

Wide-bandgap perovskites have attracted substantial attention due to their important role in serving as a top absorber in tandem solar cells (TSCs). However, wide-bandgap perovskite solar cells (PVSCs) typically suffer from severe non-radiative recombination loss and therefore exhibit high open-circuit voltage (V-OC) deficits. To address these issues, a 2D octyl-diammonium lead iodide interlayer is adopted onto the hole-transporting layer to induce the formation of an ultrathin quasi-2D perovskite that is close to the hole-selective interface. This approach not only accelerates hole transfer and retards hole accumulation but also reduces the trap density in the perovskite layer on top, thereby efficiently suppresses non-radiative recombination pathways. Consequently, the champion wide-bandgap device (approximate to 1.66 eV) exhibits a power conversion efficiency (PCE) of 21.05% with a V-OC of 1.23 V, where the V-OC deficit of 0.43 V is among the lowest values for inverted wide-bandgap PVSCs. Moreover, by stacking a semi-transparent perovskite top cell on a 1.1 eV Cu2ZnSn(S,Se)(4) (CZTSSe) bottom cell, a 22.27% PCE was achieved on a perovskite/CZTSSe four-terminal tandem solar cell, paving the way for all-solution-processed, low-cost, and efficient TSCs with mitigated energy loss in the wide-bandgap top cells.

interfacial engineering non-radiative recombination quasi-2D perovskite interfaces V (OC) deficit wide-bandgap perovskite solar cells

SCI ; EI

英语

NI论文

通讯

APRC Grant of the City University of Hong Kong[9380086] ; Innovation and Technology Fund["ITS/497/18FP","GHP/021/18SZ"] ; Office of Naval Research[N00014-20-1-2191] ; GRF Grant[11307621] ; Research Grants Council of Hong Kong, Guangdong Major Project of Basic and Applied Basic Research[2019B030302007] ; Guangdong-Hong Kong-Macao Joint Laboratory of Optoelectronic and Magnetic Functional Materials[2019B121205002] ; Shenzhen Science and Technology Innovation Committee[JCYJ20180507181718203] ; National Key Research and Development Project - Ministry of Science and Technology of China["2016YFA0202400","2016YFA0202404"] ; Basic and Applied Basic Research Foundation of Guangdong Province[2019B1515120083] ; Peacock Team Project funding from the Shenzhen Science and Technology Innovation Committee[KQTD2015033110182370] ; Shenzhen Development and Reform Committee[2019-126]

Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics

Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter

WOS:000703005400001

WILEY-V C H VERLAG GMBH

20214010979686

Cell engineering ; Energy dissipation ; Energy gap ; Iodine compounds ; Layered semiconductors ; Lead compounds ; Open circuit voltage ; Perovskite solar cells ; Solar absorbers

Biomedical Engineering:461.1 ; Minerals:482.2 ; Energy Losses (industrial and residential):525.4 ; Solar Energy and Phenomena:657.1 ; Solar Cells:702.3 ; Semiconducting Materials:712.1 ; Coating Materials:813.2

MATERIALS SCIENCE

Web of Science

1.City Univ Hong Kong, Dept Mat Sci & Engn, Kowloon, Hong Kong 999077, Peoples R China
2.Nankai Univ, Inst Photoelect Thin Film Devices & Technol, Tianjin Key Lab Thin Film Devices & Technol, Tianjin 300350, Peoples R China
3.City Univ Hong Kong, Dept Chem, Kowloon, Hong Kong 999077, Peoples R China
4.City Univ Hong Kong, Hong Kong Inst Clean Energy, Kowloon, Hong Kong 999077, Peoples R China
5.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen Engn Res & Dev Ctr Flexible Solar Cells, Shenzhen 518055, Peoples R China
6.Univ Washington, Dept Mat Sci & Engn, Seattle, WA 98915 USA

Wang, Deng,Guo, Hongling,Wu, Xin,et al. Interfacial Engineering of Wide-Bandgap Perovskites for Efficient Perovskite/CZTSSe Tandem Solar Cells[J]. ADVANCED FUNCTIONAL MATERIALS,2021,32.

Wang, Deng.,Guo, Hongling.,Wu, Xin.,Deng, Xiang.,Li, Fengzhu.,...&Jen, Alex K. Y..(2021).Interfacial Engineering of Wide-Bandgap Perovskites for Efficient Perovskite/CZTSSe Tandem Solar Cells.ADVANCED FUNCTIONAL MATERIALS,32.

Wang, Deng,et al."Interfacial Engineering of Wide-Bandgap Perovskites for Efficient Perovskite/CZTSSe Tandem Solar Cells".ADVANCED FUNCTIONAL MATERIALS 32(2021).