Bulk Heterojunction Antimony Selenosulfide Thin-Film Solar Cells with Efficient Charge Extraction and Suppressed Recombination

Zhou, Ru1,2; Li, Xiaozhang1; Wan, Lei1; Niu, Haihong1; Wang, Huan1; Yang, Xi1; Wang, Xingzhu3; Hou, Jiwei4; Xu, Jinzhang1; Xu, Baomin3

2023-09-01

10.1002/adfm.202308021

ADVANCED FUNCTIONAL MATERIALS   Impact Factor & Quartile

1616-301X

1616-3028

As an emerging earth-abundant light harvesting material, antimony selenosulfide (Sb-2(S,Se)(3)) has received tremendous attention for photovoltaics. Manipulating the carrier separation and recombination processes is critical to achieve high device efficiency. Compared to the conventional planar heterojunction (PHJ), the bulk heterojunction (BHJ) configuration affords great potential to enable efficient charge extraction. In this work, BHJ Sb-2(S,Se)(3) solar cells are constructed based on CdS nanorod arrays (NRAs). Highly ordered CdS NRAs with appropriate nanorod lengths and diameters are obtained by regulating the growth environment and screening different substrates for CdS deposition. A low-temperature oxygen doping strategy implemented on CdS NRAs is further developed to improve the optoelectronic and defect properties as well as form a favorable cascade band structure for CdS NRAs, so as to realize more efficient charge extraction and suppressed recombination at the heterointerface. As a result, the CdS NRAs-based superstrated BHJ Sb-2(S,Se)(3) solar cell yields a considerable power conversion efficiency of 8.04%, outperforming that of the PHJ device. A careful comparative study of PHJ and BHJ based on electrostatic field simulations indicates that the BHJ allows more efficient charge extraction and transport. This work highlights the great potential of BHJ configuration for constructing high-performance antimony chalcogenide solar cells.

bulk heterojunction CdS nanorod arrays O-doping strategy Sb-2(S, Se)(3) solar cells

SCI

English

NI Journal Papers

Corresponding

The financial support by the National Natural Science Foundation of China (nos. 52371219 and U19A2089), the National Natural Science Foundation of Anhui Province (no. 2108085ME147), and the National Natural Science Foundation of Hefei City (no. 2022024), a[52002170] ; National Natural Science Foundation of China[2108085ME147] ; National Natural Science Foundation of Anhui Province[2022024] ; National Natural Science Foundation of Hefei City[PA2021KCPY0036] ; Fundamental Research Funds for the Central Universities[BK20190687] ; Natural Science Foundation of Jiangsu Province[KL19-03]

Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics

Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter

WOS:001073719500001

WILEY-V C H VERLAG GMBH

MATERIALS SCIENCE

Web of Science

1.Hefei Univ Technol, Sch Elect & Automat Engn, Hefei 230009, Peoples R China
2.Univ Oxford, Dept Chem, Inorgan Chem Lab, South Pk Rd, Oxford OX1 3QR, England
3.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China
4.Nanjing Tech Univ, Sch Phys & Math Sci, State Key Lab Mat Oriented Chem Engn, Nanjing 211816, Jiangsu, Peoples R China

Zhou, Ru,Li, Xiaozhang,Wan, Lei,et al. Bulk Heterojunction Antimony Selenosulfide Thin-Film Solar Cells with Efficient Charge Extraction and Suppressed Recombination[J]. ADVANCED FUNCTIONAL MATERIALS,2023.

Zhou, Ru.,Li, Xiaozhang.,Wan, Lei.,Niu, Haihong.,Wang, Huan.,...&Xu, Baomin.(2023).Bulk Heterojunction Antimony Selenosulfide Thin-Film Solar Cells with Efficient Charge Extraction and Suppressed Recombination.ADVANCED FUNCTIONAL MATERIALS.

Zhou, Ru,et al."Bulk Heterojunction Antimony Selenosulfide Thin-Film Solar Cells with Efficient Charge Extraction and Suppressed Recombination".ADVANCED FUNCTIONAL MATERIALS (2023).