Promoting the Efficiency and Stability of CsPbIBr2-Based All-Inorganic Perovskite Solar Cells through a Functional Cu2+Doping Strategy
Although organic-inorganic halide perovskite solar cells (PSCs) have shown dramatically enhanced power conversion efficiencies (PCEs) in the last decade, their long-term stability is still a critical challenge for commercialization. To address this issue, tremendous research efforts have been devote...
| Main Authors: | , , , , , , , |
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| Format: | Journal Article |
| Language: | English |
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AMER CHEMICAL SOC
2020
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| Online Access: | http://purl.org/au-research/grants/arc/DP150104365 http://hdl.handle.net/20.500.11937/91957 |
| _version_ | 1848765605342085120 |
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| author | Liu, P. Yang, X. Chen, Y. Xiang, H. Wang, Wei Ran, R. Zhou, W. Shao, Zongping |
| author_facet | Liu, P. Yang, X. Chen, Y. Xiang, H. Wang, Wei Ran, R. Zhou, W. Shao, Zongping |
| author_sort | Liu, P. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Although organic-inorganic halide perovskite solar cells (PSCs) have shown dramatically enhanced power conversion efficiencies (PCEs) in the last decade, their long-term stability is still a critical challenge for commercialization. To address this issue, tremendous research efforts have been devoted to exploring all-inorganic PSCs because of their intrinsically high structural stability. Among them, CsPbIBr2-based all-inorganic PSCs have drawn increasing attention owing to their suitable band gap and favorable stability. However, the PCEs of CsPbIBr2-based PSCs are still far from those of their organic-inorganic counterparts, thus inhibiting their practical applications. Herein, we demonstrate that by simply doping an appropriate amount of Cu2+ into a CsPbIBr2 perovskite lattice (0.5 at. % to Pb2+), the perovskite crystallinity and grain size are increased, the perovskite film morphology is improved, the energy level alignment is optimized, and the trap density and charge recombination are reduced. As a consequence, a decent PCE improvement from 7.81 to 10.4% is achieved along with an enhancement ratio of 33% with a CsPbIBr2-based PSC. Furthermore, the long-term stability of CsPbIBr2-based PSCs against moisture and heat also remarkably improved by Cu2+ doping. This work provides a facile and effective route to improve the PCE and long-term stability of CsPbIBr2-based all-inorganic PSCs. |
| first_indexed | 2025-11-14T11:37:54Z |
| format | Journal Article |
| id | curtin-20.500.11937-91957 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T11:37:54Z |
| publishDate | 2020 |
| publisher | AMER CHEMICAL SOC |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-919572023-06-08T06:11:11Z Promoting the Efficiency and Stability of CsPbIBr2-Based All-Inorganic Perovskite Solar Cells through a Functional Cu2+Doping Strategy Liu, P. Yang, X. Chen, Y. Xiang, H. Wang, Wei Ran, R. Zhou, W. Shao, Zongping Science & Technology Technology Nanoscience & Nanotechnology Materials Science, Multidisciplinary Science & Technology - Other Topics Materials Science CsPbIBr2 all-inorganic perovskite solar cells functional doping mixed halide OPEN-CIRCUIT VOLTAGE PERFORMANCE SUBSTITUTION FILMS CsPbIBr2 all-inorganic functional doping mixed halide perovskite solar cells Although organic-inorganic halide perovskite solar cells (PSCs) have shown dramatically enhanced power conversion efficiencies (PCEs) in the last decade, their long-term stability is still a critical challenge for commercialization. To address this issue, tremendous research efforts have been devoted to exploring all-inorganic PSCs because of their intrinsically high structural stability. Among them, CsPbIBr2-based all-inorganic PSCs have drawn increasing attention owing to their suitable band gap and favorable stability. However, the PCEs of CsPbIBr2-based PSCs are still far from those of their organic-inorganic counterparts, thus inhibiting their practical applications. Herein, we demonstrate that by simply doping an appropriate amount of Cu2+ into a CsPbIBr2 perovskite lattice (0.5 at. % to Pb2+), the perovskite crystallinity and grain size are increased, the perovskite film morphology is improved, the energy level alignment is optimized, and the trap density and charge recombination are reduced. As a consequence, a decent PCE improvement from 7.81 to 10.4% is achieved along with an enhancement ratio of 33% with a CsPbIBr2-based PSC. Furthermore, the long-term stability of CsPbIBr2-based PSCs against moisture and heat also remarkably improved by Cu2+ doping. This work provides a facile and effective route to improve the PCE and long-term stability of CsPbIBr2-based all-inorganic PSCs. 2020 Journal Article http://hdl.handle.net/20.500.11937/91957 10.1021/acsami.0c04938 English http://purl.org/au-research/grants/arc/DP150104365 http://purl.org/au-research/grants/arc/DP160104835 AMER CHEMICAL SOC restricted |
| spellingShingle | Science & Technology Technology Nanoscience & Nanotechnology Materials Science, Multidisciplinary Science & Technology - Other Topics Materials Science CsPbIBr2 all-inorganic perovskite solar cells functional doping mixed halide OPEN-CIRCUIT VOLTAGE PERFORMANCE SUBSTITUTION FILMS CsPbIBr2 all-inorganic functional doping mixed halide perovskite solar cells Liu, P. Yang, X. Chen, Y. Xiang, H. Wang, Wei Ran, R. Zhou, W. Shao, Zongping Promoting the Efficiency and Stability of CsPbIBr2-Based All-Inorganic Perovskite Solar Cells through a Functional Cu2+Doping Strategy |
| title | Promoting the Efficiency and Stability of CsPbIBr2-Based All-Inorganic Perovskite Solar Cells through a Functional Cu2+Doping Strategy |
| title_full | Promoting the Efficiency and Stability of CsPbIBr2-Based All-Inorganic Perovskite Solar Cells through a Functional Cu2+Doping Strategy |
| title_fullStr | Promoting the Efficiency and Stability of CsPbIBr2-Based All-Inorganic Perovskite Solar Cells through a Functional Cu2+Doping Strategy |
| title_full_unstemmed | Promoting the Efficiency and Stability of CsPbIBr2-Based All-Inorganic Perovskite Solar Cells through a Functional Cu2+Doping Strategy |
| title_short | Promoting the Efficiency and Stability of CsPbIBr2-Based All-Inorganic Perovskite Solar Cells through a Functional Cu2+Doping Strategy |
| title_sort | promoting the efficiency and stability of cspbibr2-based all-inorganic perovskite solar cells through a functional cu2+doping strategy |
| topic | Science & Technology Technology Nanoscience & Nanotechnology Materials Science, Multidisciplinary Science & Technology - Other Topics Materials Science CsPbIBr2 all-inorganic perovskite solar cells functional doping mixed halide OPEN-CIRCUIT VOLTAGE PERFORMANCE SUBSTITUTION FILMS CsPbIBr2 all-inorganic functional doping mixed halide perovskite solar cells |
| url | http://purl.org/au-research/grants/arc/DP150104365 http://purl.org/au-research/grants/arc/DP150104365 http://hdl.handle.net/20.500.11937/91957 |