Journal
JOURNAL OF PHYSICS D-APPLIED PHYSICS
Volume 55, Issue 6, Pages -Publisher
IOP Publishing Ltd
DOI: 10.1088/1361-6463/ac3172
Keywords
CsPbBr3 films; modified hybrid chemical vapor deposition; deposition conditions; perovskite solar cells; electron beam evaporation
Categories
Funding
- Program for the Innovation Team of Science and Technology in University of Henan of China [20IRTSTHN014]
- Excellent Youth Foundation of He'nan Scientific Committee [202300410356]
- Project of Science and Technology Tackling Key Problems in Henan Province of China [212102210003]
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High-quality CsPbBr3 films with good crystallinity and uniformity were successfully fabricated using a modified hybrid chemical vapor deposition method. The CsPbBr3 perovskite solar cells achieved impressive performance, suggesting a promising fabrication route for all-inorganic perovskite thin films in photovoltaic applications.
Due to its outstanding stability, all-inorganic cesium lead bromide (CsPbBr3) perovskite is gaining increasing attention as a functional material in photovoltaics and other optoelectronic applications. However, the preparation of high-quality CsPbBr3 films via solution processing remains a significant challenge due to the cesium precursor's low solubility in common solvents. As a result, developing viable evaporation deposition strategies is critical for increasing the photovoltaic performance of perovskite solar cells (PSCs) based on CsPbBr3. In this paper, a modified hybrid chemical vapor deposition is applied to fabricate CsPbBr3 films, and the effects of reaction temperature and reaction time on the crystallinity, morphology, and photo-electric properties of the films are investigated. By optimizing the reaction conditions, high-quality CsPbBr3 films with good crystallinity and uniformity are successfully obtained. Based on these films, CsPbBr3 PSCs with a device configuration of fluorine-doped tin oxide/compact-TiO2/CsPbBr3/carbon attained impressive power conversion efficiency of 4.41% with an ultra-high open-circuit voltage (V (OC)) of 1.39 V. This demonstration suggests that the modified hybrid chemical vapor deposition strategy enables a promising fabrication route suitable for all-inorganic perovskite thin films in photovoltaic application.
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