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ShanghaiTech University Knowledge Management System
| Spatial PbI2 distribution impacting stability of perovskite solar cells | |
| 2025-06 | |
| 发表期刊 | JOURNAL OF ENERGY CHEMISTRY (IF:14.0[JCR-2023],12.3[5-Year]) |
| ISSN | 2095-4956 |
| 卷号 | 105页码:446-453 |
| 发表状态 | 已发表 |
| DOI | 10.1016/j.jechem.2025.02.006 |
| 摘要 | Introducing a stoichiometric excess of lead iodide (PbI2) in perovskite films has been demonstrated as an effective passivation strategy that can improve the power conversion efficiency (PCE) of perovskite solar cells (PSCs). However, excess PbI2 is also known to accelerate the degradation of the perovskite layer. In this study, we show that this degradation primarily stems from the decomposition of PbI2 at the bottom of the perovskite film which is exposed to light. We further show that when using a two-step spin coating deposition procedure, the excess PbI2 results from the decomposition of the perovskite during the annealing process rather than the presence of non-reacted PbI2. Finally, we demonstrate that the spatial distribution of PbI2 within the perovskite films can be controlled in a way that mitigates the PbI2 induced perovskite decomposition. In this manner, we produced devices exhibiting initial power conversion efficiencies over 25%, maintaining 98.6% after 1000 h of maximum power point tracking under continuous illumination. These findings offer valuable insights into achieving high performance PSCs through judicious process control using a two-step spin-coating procedure. © 2025 Science Press |
| 关键词 | Iodine compounds Perovskite Annealing process Exposed to Lead iodide Passivation strategy PbI2 distribution Perovskite films Perovskite layers Power conversion efficiencies Spin-coating deposition Two step method |
| URL | 查看原文 |
| 收录类别 | EI ; SCI |
| 语种 | 英语 |
| 资助项目 | National Key R&D Program of China[2021YFF0501900] ; Excellent Young Scholar Fund from the National Natural Science Foundation of China[22122903] ; Tianjin Distinguished Young Scholar Fund[20JCJQJC00260] |
| WOS研究方向 | Chemistry ; Energy & Fuels ; Engineering |
| WOS类目 | Chemistry, Applied ; Chemistry, Physical ; Energy & Fuels ; Engineering, Chemical |
| WOS记录号 | WOS:001446229900001 |
| 出版者 | Elsevier B.V. |
| EI入藏号 | 20251118042613 |
| EI主题词 | Spin coating |
| EI分类号 | 208.1 Coating Techniques ; 482.1 Minerals ; 804.1 Organic Compounds ; 804.2 Inorganic Compounds |
| 原始文献类型 | Journal article (JA) |
| 文献类型 | 期刊论文 |
| 条目标识符 | https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/503674 |
| 专题 | 物质科学与技术学院 物质科学与技术学院_PI研究组_陈刚组 |
| 通讯作者 | Luo, Jingshan |
| 作者单位 | 1.Institute of Photoelectronic Thin Film Devices and Technology, State Key Laboratory of Photovoltaic Materials and Cells, Tianjin Key Laboratory of Efficient Solar Energy Utilization, Ministry of Education Engineering Research Center of Thin Film Photoelectronic Technology, Nankai University, Tianjin; 300350, China; 2.Institute of Technology for Carbon Neutrality, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Guangdong, Shenzhen; 518055, China; 3.Key Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences, Beijing; 100083, China; 4.School of Physical Science and Technology, ShanghaiTech University, Shanghai; 201210, China; 5.Department of Physics, Chemistry and Biology (IFM), Linköping University, Linköping, Sweden; 6.Frontiers Science Center for New Organic Matter, Nankai University, Tianjin; 300071, China; 7.Haihe Laboratory of Sustainable Chemical Transformations, Tianjin; 300192, China; 8.School of Energy and Materials, Shihezi University, Xinjiang, Shihezi; 832003, China; 9.Institute of Bingtuan Energy Development Research, Shihezi University, Xinjiang, Shihezi; 832003, China |
| 推荐引用方式 GB/T 7714 | Wang, Huanhuan,Wang, Zaiwei,Qu, Zihan,et al. Spatial PbI2 distribution impacting stability of perovskite solar cells[J]. JOURNAL OF ENERGY CHEMISTRY,2025,105:446-453. |
| APA | Wang, Huanhuan.,Wang, Zaiwei.,Qu, Zihan.,Zhang, Zhuang.,Meng, Ke.,...&Luo, Jingshan.(2025).Spatial PbI2 distribution impacting stability of perovskite solar cells.JOURNAL OF ENERGY CHEMISTRY,105,446-453. |
| MLA | Wang, Huanhuan,et al."Spatial PbI2 distribution impacting stability of perovskite solar cells".JOURNAL OF ENERGY CHEMISTRY 105(2025):446-453. |
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