Effects of substrate temperature on the crystallization process and properties of mixed-ion perovskite layers
Literature Information
Chen Zhao, Deng Li, Heng Guo, Feiyi Liao, Wei Cao, Xiaobin Niu, Yiying Zhao
The morphology and crystalline quality of perovskite layers are crucial to fabricate high efficiency and high stability perovskite solar cells (PSCs). In this work, we investigated how the substrate temperature influences the crystallization process of the mixed-ion perovskite material (FAPbI3)0.85(MAPbBr3)0.15. The intermediate phase formation, the following perovskite phase transformation, and the film morphology were studied by spin-coating the perovskite material onto hot substrates using microscopy and X-ray diffraction methods. The results show that elevating the substrate temperature alters the morphology of perovskite films from pure dendritic to dendritic/island co-existing structures. The appearance of islands increases the defect density in the perovskite layer and deteriorates the device performance. The substrate temperature has to be controlled in a certain range to form a high crystallinity perovskite layer. The morphology evolution mechanism was also discussed. This work provided a better understanding of the roles of DMSO and temperature in the crystallization process, which will provide more opportunities and guidance for the upscaling of mixed-ion perovskite solar cell manufacturing.
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Journal of Materials Chemistry A, B & C cover high quality studies across all fields of materials chemistry. The journals focus on those theoretical or experimental studies that report new understanding, applications, properties and synthesis of materials. The journals have a strong history of publishing quality reports of interest to interdisciplinary communities and providing an efficient and rigorous service through peer review and publication. The journals are led by an international team of Editors-in-Chief and Associate Editors who are all active researchers in their fields. Journal of Materials Chemistry A, B & C are separated by the intended application of the material studied. Broadly, applications in energy and sustainability are of interest to Journal of Materials Chemistry A, applications in biology and medicine are of interest to Journal of Materials Chemistry B, and applications in optical, magnetic and electronic devices are of interest to Journal of Materials Chemistry C. More than one Journal of Materials Chemistry journal may be suitable for certain fields and researchers are encouraged to submit their paper to the journal that they feel best fits for their particular article. Example topic areas within the scope of Journal of Materials Chemistry A are listed below. This list is neither exhaustive nor exclusive. Artificial photosynthesis Batteries Carbon dioxide conversion Catalysis Fuel cells Gas capture/separation/storage Green/sustainable materials Hydrogen generation Hydrogen storage Photocatalysis Photovoltaics Self-cleaning materials Self-healing materials Sensors Supercapacitors Thermoelectrics Water splitting Water treatment












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