Resumen
The energy landscape of reduced-dimensional perovskites (RDPs) can be tailored by adjusting their layer width (n). Recently, two/three-dimensional (2D/3D) heterostructures containing n = 1 and 2 RDPs have produced perovskite solar cells (PSCs) with >25% power conversion efficiency (PCE). Unfortunately, this method does not translate to inverted PSCs due to electron blocking at the 2D/3D interface. Here we report a method to increase the layer width of RDPs in 2D/3D heterostructures to address this problem. We discover that bulkier organics form 2D heterostructures more slowly, resulting in wider RDPs; and that small modifications to ligand design induce preferential growth of n ≥ 3 RDPs. Leveraging these insights, we developed efficient inverted PSCs (with a certified quasi-steady-state PCE of 23.91%). Unencapsulated devices operate at room temperature and around 50% relative humidity for over 1,000 h without loss of PCE; and, when subjected to ISOS-L3 accelerated ageing, encapsulated devices retain 92% of initial PCE after 500 h.
| Idioma original | English |
|---|---|
| Páginas (desde-hasta) | 352-358 |
| Número de páginas | 7 |
| Publicación | Nature Photonics |
| Volumen | 16 |
| N.º | 5 |
| DOI | |
| Estado | Published - may 2022 |
Nota bibliográfica
Publisher Copyright:© 2022, The Author(s), under exclusive licence to Springer Nature Limited.
Financiación
This research was made possible by the US Department of the Navy, Office of Naval Research Grant (N00014-20-1-2572). This work was supported in part by the Ontario Research Fund-Research Excellence program (ORF7-Ministry of Research and Innovation, Ontario Research Fund-Research Excellence Round 7). We appreciate the Shanghai Synchrotron Radiation Facility (beamline 14B and 16B) and X. Gao and Z. Su for their help with GIWAXS characterization. Z.N. is grateful for support by the National Key Research Program (2021YFA0715502, 2016YFA0204000) and the National Science Fund of China (61935016). S.M.P., H.R.A. and K.R.G. acknowledge the US Department of Energy under Grant DE-SC0018208 for supporting the UPS and IPES measurements. T.F. and T.C. acknowledge the Canadian Foundation for Innovation and the Natural Science and Engineering Council of Canada (NSERC) for KPFM measurements. F.L and Y.G. were funded by the King Abdullah University of Science and Technology (KAUST) Office of Sponsored Research (OSR) under Award No: OSR-CARF/CCF-3079 and OSR-2018-CRG7-3737. This research was made possible by the US Department of the Navy, Office of Naval Research Grant (N00014-20-1-2572). This work was supported in part by the Ontario Research Fund-Research Excellence program (ORF7-Ministry of Research and Innovation, Ontario Research Fund-Research Excellence Round 7). We appreciate the Shanghai Synchrotron Radiation Facility (beamline 14B and 16B) and X. Gao and Z. Su for their help with GIWAXS characterization. Z.N. is grateful for support by the National Key Research Program (2021YFA0715502, 2016YFA0204000) and the National Science Fund of China (61935016). S.M.P., H.R.A. and K.R.G. acknowledge the US Department of Energy under Grant DE-SC0018208 for supporting the UPS and IPES measurements. T.F. and T.C. acknowledge the Canadian Foundation for Innovation and the Natural Science and Engineering Council of Canada (NSERC) for KPFM measurements. F.L and Y.G. were funded by the King Abdullah University of Science and Technology (KAUST) Office of Sponsored Research (OSR) under Award No: OSR-CARF/CCF-3079 and OSR-2018-CRG7-3737.
| Financiadores | Número del financiador |
|---|---|
| National Key Basic Research Program of China | 2021YFA0715502, 2016YFA0204000 |
| Ontario Research Fund-Research Excellence Round 7 | |
| Ontario Research Fund-Research Excellence program | |
| Shanghai Synchrotron Radiation Facility | 16B |
| Office of Naval Research Naval Academy | N00014-20-1-2572 |
| Office of Naval Research Naval Academy | |
| U.S. Department of Energy Oak Ridge National Laboratory U.S. Department of Energy National Science Foundation National Energy Research Scientific Computing Center | DE-SC0018208 |
| U.S. Department of Energy Oak Ridge National Laboratory U.S. Department of Energy National Science Foundation National Energy Research Scientific Computing Center | |
| U.S. Navy Air Systems Command | |
| Natural Sciences and Engineering Research Council of Canada | |
| Canada Foundation for Innovation | |
| National Natural Science Foundation of China (NSFC) | 61935016 |
| National Natural Science Foundation of China (NSFC) | |
| King Abdullah University of Science and Technology | OSR-CARF/CCF-3079, OSR-2018-CRG7-3737 |
| King Abdullah University of Science and Technology | |
| Ontario Ministry of Research, Innovation and Science |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
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