| 题名 | Dielectric screening in perovskite photovoltaics |
| 作者 | |
| 通讯作者 | Russell，Thomas P.; Zhang，Wei; Zhu，Rui |
| 发表日期 | 2021-12-01
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| DOI | |
| 发表期刊 | |
| EISSN | 2041-1723
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| 卷号 | 12期号:1 |
| 摘要 | The performance of perovskite photovoltaics is fundamentally impeded by the presence of undesirable defects that contribute to non-radiative losses within the devices. Although mitigating these losses has been extensively reported by numerous passivation strategies, a detailed understanding of loss origins within the devices remains elusive. Here, we demonstrate that the defect capturing probability estimated by the capture cross-section is decreased by varying the dielectric response, producing the dielectric screening effect in the perovskite. The resulting perovskites also show reduced surface recombination and a weaker electron-phonon coupling. All of these boost the power conversion efficiency to 22.3% for an inverted perovskite photovoltaic device with a high open-circuit voltage of 1.25 V and a low voltage deficit of 0.37 V (a bandgap ~1.62 eV). Our results provide not only an in-depth understanding of the carrier capture processes in perovskites, but also a promising pathway for realizing highly efficient devices via dielectric regulation. |
| 相关链接 | [Scopus记录] |
| 收录类别 | |
| 语种 | 英语
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| 重要成果 | NI期刊
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| 学校署名 | 其他
|
| WOS记录号 | WOS:000656482800009
|
| Scopus记录号 | 2-s2.0-85105194320
|
| 来源库 | Scopus
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| 引用统计 |
被引频次[WOS]：115
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| 成果类型 | 期刊论文 |
| 条目标识符 | http://sustech.caswiz.com/handle/2SGJ60CL/228425 |
| 专题 | 工学院_深港微电子学院 |
| 作者单位 | 1.State Key Laboratory for Artificial Microstructure and Mesoscopic Physics,School of Physics,Frontiers Science Center for Nano-optoelectronics & Collaborative Innovation Center of Quantum Matter,Peking University,Beijing,China 2.Department of Electrical Engineering,Princeton University,Princeton,United States 3.School of Microelectronics,Southern University of Science and Technology,Shenzhen,China 4.Polymer Science and Engineering Department,University of Massachusetts,Amherst,United States 5.Materials Sciences Division,Lawrence Berkeley National Laboratory,Berkeley,United States 6.National Center for Electron Microscopy,Molecular Foundry,Lawrence Berkeley National Laboratory,Berkeley,United States 7.Collaborative Innovation Center of Extreme Optics,Shanxi University,Taiyuan,China 8.Peking University Yangtze Delta Institute of Optoelectronics,Nantong,China 9.Advanced Technology Institute,University of Surrey,Guildford,United Kingdom 10.State Centre for International Cooperation on Designer Low-Carbon and Environmental Material (SCICDLCEM),School of Materials Science and Engineering,Zhengzhou University,Zhengzhou,China |
| 推荐引用方式 GB/T 7714 |
Su，Rui,Xu，Zhaojian,Wu，Jiang,et al. Dielectric screening in perovskite photovoltaics[J]. Nature Communications,2021,12(1).
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| APA |
Su，Rui.,Xu，Zhaojian.,Wu，Jiang.,Luo，Deying.,Hu，Qin.,...&Zhu，Rui.(2021).Dielectric screening in perovskite photovoltaics.Nature Communications,12(1).
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| MLA |
Su，Rui,et al."Dielectric screening in perovskite photovoltaics".Nature Communications 12.1(2021).
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| 条目包含的文件 | 条目无相关文件。 | |||||
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