Quasi-Vertically Oriented Sb2Se3 Thin-Film Solar Cells with Open-Circuit Voltage Exceeding 500 mV Prepared via Close-Space Sublimation and Selenization
Article
Article Title | Quasi-Vertically Oriented Sb2Se3 Thin-Film Solar Cells with Open-Circuit Voltage Exceeding 500 mV Prepared via Close-Space Sublimation and Selenization |
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ERA Journal ID | 40638 |
Article Category | Article |
Authors | Fan, Ping, Chen, Guo-Jie, Chen, Shuo, Zheng, Zhuang-Hao, Azam, Muhammad, Ahmad, Nafees, Su, Zheng-Hua, Liang, Guang-Xing, Zhang, Xiang-Hua and Chen, Zhi-Gang |
Journal Title | ACS Applied Materials and Interfaces |
Journal Citation | 13 (39), pp. 46671-46680 |
Number of Pages | 10 |
Year | 2021 |
Publisher | American Chemical Society |
Place of Publication | United States |
ISSN | 1944-8244 |
1944-8252 | |
Digital Object Identifier (DOI) | https://doi.org/10.1021/acsami.1c13223 |
Web Address (URL) | https://pubs.acs.org/doi/10.1021/acsami.1c13223 |
Abstract | Sb2Se3, one of the most desirable absorption materials for next-generation thin-film solar cells, has an excellent photovoltaic characteristic. The [hk1]-oriented (quasi-vertically oriented) Sb2Se3thin film is more beneficial for promoting efficient carrier transport than the [hk0]-oriented Sb2Se3thin film. Controlling thin-film orientation remains the main obstacle to the further improvement in the efficiency of Sb2Se3-based solar cells. In this work, the controlled [hk0] or [hk1] orientation of the Sb2Se3precursor is readily adjusted by tuning the substrate temperature and the distance between the source and the sample in close-space sublimation (CSS). Well-crystallized stoichiometric Sb2Se3thin films with the desired orientation and large crystal grains are successfully prepared after selenization. Sb2Se3thin-film solar cells in a substrate configuration of glass/Mo/Sb2Se3/CdS/ITO/Ag are fabricated with a power conversion efficiency of 4.86% with a record open-circuit voltage (VOC) of 509 mV. The significant improvement inVOCis closely related to the quasi-vertically oriented Sb2Se3absorber layer with reduced deep-level defect density in the bulk and defect passivation at the Sb2Se3/CdS heterojunction. This work indicates that CSS and selenization show a remarkable potential for the fabrication of high-efficiency Sb2Se3solar cells. |
Keywords | Sb2Se3; solar cell; orientation; open-circuit voltage; close-space sublimation |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 400402. Chemical and thermal processes in energy and combustion |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Shenzhen University, China |
University of Rennes, France | |
Centre for Future Materials | |
University of Queensland |
https://research.usq.edu.au/item/zq55y/quasi-vertically-oriented-sb2se3-thin-film-solar-cells-with-open-circuit-voltage-exceeding-500-mv-prepared-via-close-space-sublimation-and-selenization
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