Abstract:
Antimony
selenosulfide, Sb2(S,Se)3, is a kind of emerging light
harvesting material for solar cell applications. This class of materials
possess earth-abundant compositional elements, excellent stability as suitable
photovoltaic properties. As new solar cell materials, to understand the fundamental
properties, development of film fabrication method and constructing device
structures are critical for the efficiency improvement. In this presentation, I
will firstly introduce the defect characteristics of this class of materials
and propose possible approaches for suppress the deep level defect. Afterwards,
I will introduce our recent research in the development of film fabrication
method, where we found that the hydrothermal deposition is able to generate Sb2(S,Se)3 film with flat and compact surface morphology, reduced defect and favorable
crystal orientation. With that, the solar cell overcoming the 10% bottleneck efficiency,
this efficiency achievement highlights the great poential of Sb2(S,Se)3 as light harvesting material.
Keywords: antimony selenosulfide, solar cell,
defect engineering, power conversion efficiency, materials synthesis
Refences:
1. B. Che, Z. Y. Cai, P.
Xiao, G. Li, Y. Q. Huang, R. F. Tang, C. F. Zhu, S. F. Yang, T. Chen, Thermally
Driven Point Defect Transformation in Antimony Selenosulfide Photovoltaic
Materials, Adv. Mater., 2023, 35, 2208564.
2. W. T. Lian, C. H. Jiang,
Y. W. Yin, R. F. Tang, G. Li, L. J. Zhang, B. Che, T. Chen, Revealing
composition and structure dependent deep-level defect in antimony trisulfide
photovoltaics, Nat. Commun., 2021,
12, 3260.
3. R. F. Tang,
X. M. Wang, W. T. Lian, J. L. Huang, Q. Wei, M. L. Huang, Y. Y. Yin, C. H.
Jiang, S. F. Yang, G. C. Xing, S. Y. Chen, C. F. Zhu, X. J. Hao, M. A.
Green, T. Chen, Hydrothermal
deposition of antimony selenosulfide thin films enables solar cells with 10%
efficiency, Nat. Energy, 2020, 5, 587-595.
4. X. M. Wang,
R. F. Tang, C. H. Jiang, W. T. Lian, H. X. Ju, G. S. Jiang, Z. Q. Li, C. F.
Zhu, T. Chen, Manipulating the electrical properties of Sb2(S,Se)3 film for high-efficiency solar cells, Adv. Energy Mater., 2020,
2002341.
5. Y. W. Yin, C.
H. Jiang, Y. Y. Ma , X. M. Wang, R. F. Tang, L. J. Zhang, Z. Q. Li, C. F. Zhu,
T. Chen, Sequential Co-Evaporation and
Deposition of Sb2(S,Se)3 Thin Film for Efficient Solar
Cells, Adv. Mater., 2021, 2006689.
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Biography:
Dr. Tao Chen is a professor at the Department of Materials Science & Engineering, University of Science & Technology of China (USTC). He obtained his PhD degree in 2010 from Nanyang Technological University (Singapore). In 2011, he moved to the Department of Physics of the Chinese University of Hong Kong working as a Research Assistant Professor. In 2015, he joined the Department of Materials Science & Engineering at USTC under a Chinese talent recruitment program. His research focusses mainly on the fundamental understanding and efficiency improvement of antimony-based thin film solar cell and the development of new concept solar cells. Dr. Chen has published 160+ papers, including Nature Energy, Nature Communications, Advanced Materials, and so on, with H-index of 55. |