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Centimetre-scale perovskite solar cells with fill factors of more than 86 per cent

Nature (London), 2022-01, Vol.601 (7894), p.573-578 [Peer Reviewed Journal]

2022. The Author(s), under exclusive licence to Springer Nature Limited. ;Copyright Nature Publishing Group Jan 27, 2022 ;ISSN: 0028-0836 ;EISSN: 1476-4687 ;DOI: 10.1038/s41586-021-04216-5 ;PMID: 35082415

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Title:
Centimetre-scale perovskite solar cells with fill factors of more than 86 per cent
Author: Peng, Jun ; Kremer, Felipe ; Walter, Daniel ; Wu, Yiliang ; Ji, Yi ; Xiang, Jin ; Liu, Wenzhu ; Duong, The ; Shen, Heping ; Lu, Teng ; Brink, Frank ; Zhong, Dingyong ; Li, Li ; Lee Cheong Lem, Olivier ; Liu, Yun ; Weber, Klaus J ; White, Thomas P ; Catchpole, Kylie R
Subjects: Annealing ; Charge materials ; Charge transport ; Electric potential ; Electromagnetism ; Electron transport ; Glass substrates ; Morphology ; Perovskites ; Photovoltaic cells ; Photovoltaics ; Solar cells ; Spectrum analysis ; Titanium ; Titanium oxide ; Titanium oxides ; Voltage
Is Part Of: Nature (London), 2022-01, Vol.601 (7894), p.573-578
Description: Owing to rapid development in their efficiency and stability , perovskite solar cells are at the forefront of emerging photovoltaic technologies. State-of-the-art cells exhibit voltage losses approaching the theoretical minimum and near-unity internal quantum efficiency , but conversion efficiencies are limited by the fill factor (<83%, below the Shockley-Queisser limit of approximately 90%). This limitation results from non-ideal charge transport between the perovskite absorber and the cell's electrodes . Reducing the electrical series resistance of charge transport layers is therefore crucial for improving efficiency. Here we introduce a reverse-doping process to fabricate nitrogen-doped titanium oxide electron transport layers with outstanding charge transport performance. By incorporating this charge transport material into perovskite solar cells, we demonstrate 1-cm cells with fill factors of >86%, and an average fill factor of 85.3%. We also report a certified steady-state efficiency of 22.6% for a 1-cm cell (23.33% ± 0.58% from a reverse current-voltage scan).
Publisher: England: Nature Publishing Group
Language: English
Identifier: ISSN: 0028-0836
EISSN: 1476-4687
DOI: 10.1038/s41586-021-04216-5
PMID: 35082415
Source: ProQuest One Psychology
ProQuest Central

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Centimetre-scale perovskite solar cells with fill factors of more than 86 per cent

2022. The Author(s), under exclusive licence to Springer Nature Limited. ;Copyright Nature Publishing Group Jan 27, 2022 ;ISSN: 0028-0836 ;EISSN: 1476-4687 ;DOI: 10.1038/s41586-021-04216-5 ;PMID: 35082415

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