Single-Crystal-Assisted In Situ Phase Reconstruction Enables Efficient and Stable 2D/3D Perovskite Solar CellsClick to copy article linkArticle link copied!
- Zonglong SongZonglong SongThe Centre of Nanoscale Science and Technology and Key Laboratory of Functional Polymer Materials, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, ChinaMore by Zonglong Song
- Yuping GaoYuping GaoThe Centre of Nanoscale Science and Technology and Key Laboratory of Functional Polymer Materials, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, ChinaMore by Yuping Gao
- Yu ZouYu ZouThe Centre of Nanoscale Science and Technology and Key Laboratory of Functional Polymer Materials, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, ChinaMore by Yu Zou
- Hao ZhangHao ZhangThe Centre of Nanoscale Science and Technology and Key Laboratory of Functional Polymer Materials, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, ChinaMore by Hao Zhang
- Rui WangRui WangThe Centre of Nanoscale Science and Technology and Key Laboratory of Functional Polymer Materials, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, ChinaMore by Rui Wang
- Yu Chen*Yu Chen*Email: [email protected]The Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, ChinaMore by Yu Chen
- Yongsheng ChenYongsheng ChenThe Centre of Nanoscale Science and Technology and Key Laboratory of Functional Polymer Materials, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, ChinaRenewable Energy Conversion and Storage Center (RECAST), Nankai University, Tianjin 300071, ChinaMore by Yongsheng Chen
- Yongsheng Liu*Yongsheng Liu*Email: [email protected]The Centre of Nanoscale Science and Technology and Key Laboratory of Functional Polymer Materials, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, ChinaRenewable Energy Conversion and Storage Center (RECAST), Nankai University, Tianjin 300071, ChinaMore by Yongsheng Liu
Abstract
Perovskite solar cells (PSCs) that incorporate both two-dimensional (2D) and three-dimensional (3D) phases possess the potential to combine the high stability of 2D PSCs with the superior efficiency of 3D PSCs. Here, we demonstrated in situ phase reconstruction of 2D/3D perovskites using a 2D perovskite single-crystal-assisted method. A gradient phase distribution of 2D RP perovskites was formed after spin-coating a solution of the 2D Ruddlesden–Popper (RP) perovskite single crystal, (DFP)2PbI4, onto the 3D perovskite surface, followed by thermal annealing. The resulting film exhibits much reduced trap density, increased carrier mobility, and superior water resistance. As a result, the optimized 2D/3D PSCs achieved a champion efficiency of 24.87% with a high open-circuit voltage (VOC) of 1.185 V. This performance surpasses the control 3D perovskite device, which achieved an efficiency of 22.43% and a VOC of 1.129 V. Importantly, the unencapsulated device demonstrates significantly enhanced operational stability, preserving over 97% of its original efficiency after continuous light irradiation for 1500 h. Moreover, the extrapolated T80 lifetimes surpass 5700 h. These findings pave the way for rational regulation of the gradient phase distribution at the interface between 2D and 3D perovskites by employing 2D RP perovskite crystals to achieve stable and efficient PSCs.
Cited By
This article is cited by 1 publications.
- Xing Li, Lei Gu, Yang Feng, Chao Wu, Chunming Yang, Lin Song. Vertically Oriented 2D Perovskite Layer with n = 1 Phase Enables Efficient and Stable Inverted Perovskite Solar Cells. ACS Applied Materials & Interfaces 2024, 16
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, 60387-60393. https://doi.org/10.1021/acsami.4c14866
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