https://scholars.lib.ntu.edu.tw/handle/123456789/402177
標題: | Enhanced Efficiency of Hot-Cast Large-Area Planar Perovskite Solar Cells/Modules Having Controlled Chloride Incorporation | 作者: | Liao, H.-C. Guo, P. Hsu, C.-P. Lin, M. Wang, B. Zeng, L. Huang, W. Soe, C.M.M. Su, W.-F. Bedzyk, M.J. Wasielewski, M.R. Facchetti, A. Chang, R.P.H. Kanatzidis, M.G. Marks, T.J. WEI-FANG SU |
關鍵字: | hot-casting; perovskite solar cells; power conversion efficiency; solution process | 公開日期: | 2017 | 卷: | 7 | 期: | 8 | 來源出版物: | Advanced Energy Materials | 摘要: | Organic–inorganic perovskite photovoltaics are an emerging solar technology. Developing materials and processing techniques that can be implemented in large-scale manufacturing is extremely important for realizing the potential of commercialization. Here we report a hot-casting process with controlled Cl− incorporation which enables high stability and high power-conversion-efficiencies (PCEs) of 18.2% for small area (0.09 cm2) and 15.4% for large-area (≈1 cm2) single solar cells. The enhanced performance versus tri-iodide perovskites can be ascribed to longer carrier diffusion lengths, improved uniformity of the perovskite film morphology, favorable perovskite crystallite orientation, a halide concentration gradient in the perovskite film, and reduced recombination by introducing Cl−. Additionally, Cl− improves the device stability by passivating the reaction between I− and the silver electrode. High-quality thin films deployed over a large-area 5 cm × 5 cm eight-cell module have been fabricated and exhibit an active-area PCE of 12.0%. The feasibility of material and processing strategies in industrial large-scale coating techniques is then shown by demonstrating a “dip-coating” process which shows promise for large throughput production of perovskite solar modules. © 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim |
URI: | http://www.scopus.com/inward/record.url?eid=2-s2.0-85007400197&partnerID=MN8TOARS http://scholars.lib.ntu.edu.tw/handle/123456789/402177 |
DOI: | 10.1002/aenm.201601660 | SDG/關鍵字: | Carrier concentration; Coatings; Conversion efficiency; Efficiency; Perovskite; Process control; Solar cells; Solar power generation; Thin films; Throughput; Carrier diffusion length; Crystallite orientation; Halide concentration; High power conversion; Large-scale manufacturing; Power conversion efficiencies; Processing strategies; Solution process; Perovskite solar cells |
顯示於: | 材料科學與工程學系 |
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