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Han EQ, Lyu M, Choi E, Zhao Y, Zhang Y, Lee J, Lee SM, Jiao Y, Ahmad SHA, Seidel J, Yun JS, Yun JH, Wang L. High-Performance Indoor Perovskite Solar Cells by Self-Suppression of Intrinsic Defects via a Facile Solvent-Engineering Strategy. Small 2024; 20:e2305192. [PMID: 37718499 DOI: 10.1002/smll.202305192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 08/31/2023] [Indexed: 09/19/2023]
Abstract
Lead halide perovskite solar cells have been emerging as very promising candidates for applications in indoor photovoltaics. To maximize their indoor performance, it is of critical importance to suppress intrinsic defects of the perovskite active layer. Herein, a facile solvent-engineering strategy is developed for effective suppression of both surface and bulk defects in lead halide perovskite indoor solar cells, leading to a high efficiency of 35.99% under the indoor illumination of 1000 lux Cool-white light-emitting diodes. Replacing dimethylformamide (DMF) with N-methyl-2-pyrrolidone (NMP) in the perovskite precursor solvent significantly passivates the intrinsic defects within the thus-prepared perovskite films, prolongs the charge carrier lifetimes and reduces non-radiative charge recombination of the devices. Compared to the DMF, the much higher interaction energy between NMP and formamidinium iodide/lead halide contributes to the markedly improved quality of the perovskite thin films with reduced interfacial halide deficiency and non-radiative charge recombination, which in turn enhances the device performance. This work paves the way for developing efficient indoor perovskite solar cells for the increasing demand for power supplies of Internet-of-Things devices.
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Affiliation(s)
- E Q Han
- Nanomaterials Centre, School of Chemical Engineering, Australian Institute for Bioengineering and Nanotechnology, The University of Queensland (St Lucia), Brisbane, Queensland, 4072, Australia
| | - Miaoqiang Lyu
- Nanomaterials Centre, School of Chemical Engineering, Australian Institute for Bioengineering and Nanotechnology, The University of Queensland (St Lucia), Brisbane, Queensland, 4072, Australia
| | - Eunyoung Choi
- Australian Centre for Advanced Photovoltaics, School of Photovoltaic and Renewable Energy Engineering, University of New South Wales, Sydney, New South Wales, 2052, Australia
| | - Yuying Zhao
- College of Physics, Hebei Key Laboratory of Photophysics Research and Application, Hebei Normal University, Shijiazhuang, 050024, China
| | - Yurou Zhang
- Nanomaterials Centre, School of Chemical Engineering, Australian Institute for Bioengineering and Nanotechnology, The University of Queensland (St Lucia), Brisbane, Queensland, 4072, Australia
| | - Jaeho Lee
- Nanomaterials Centre, School of Chemical Engineering, Australian Institute for Bioengineering and Nanotechnology, The University of Queensland (St Lucia), Brisbane, Queensland, 4072, Australia
| | - Su-Min Lee
- Air and Environment Energy Nexus Lab, Department of Environmental Science and Engineering, College of Engineering, Kyung Hee University, Gyeonggi-do, 17104, Republic of Korea
| | - Yalong Jiao
- College of Physics, Hebei Key Laboratory of Photophysics Research and Application, Hebei Normal University, Shijiazhuang, 050024, China
| | - Syed Haseeb Ali Ahmad
- Nanomaterials Centre, School of Chemical Engineering, Australian Institute for Bioengineering and Nanotechnology, The University of Queensland (St Lucia), Brisbane, Queensland, 4072, Australia
| | - Jan Seidel
- School of Materials Science and Engineering, University of New South Wales, Sydney, New South Wales, 2052, Australia
- ARC Centre of Excellence in Future Low-Energy Electronics Technologies (FLEET), University of New South Wales, Sydney, New South Wales, 2052, Australia
| | - Jae Sung Yun
- Australian Centre for Advanced Photovoltaics, School of Photovoltaic and Renewable Energy Engineering, University of New South Wales, Sydney, New South Wales, 2052, Australia
- Advanced Technology Institute, Department of Electrical and Electronic Engineering, University of Surrey, Guildford, Surrey, GU2 7XH, UK
| | - Jung-Ho Yun
- Nanomaterials Centre, School of Chemical Engineering, Australian Institute for Bioengineering and Nanotechnology, The University of Queensland (St Lucia), Brisbane, Queensland, 4072, Australia
- Air and Environment Energy Nexus Lab, Department of Environmental Science and Engineering, College of Engineering, Kyung Hee University, Gyeonggi-do, 17104, Republic of Korea
| | - Lianzhou Wang
- Nanomaterials Centre, School of Chemical Engineering, Australian Institute for Bioengineering and Nanotechnology, The University of Queensland (St Lucia), Brisbane, Queensland, 4072, Australia
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