Carrier management through electrode and electron-selective layer engineering for 10.70% efficiency antimony selenosulfide solar cells | Nature Energy

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Antimony selenosulfide (Sb2(S,Se)3) solar cells suffer from charge carrier loss, which has limited the power conversion efficiency to around 10%. Here we develop a charge carrier management strategy using a textured fluorine-doped tin oxide substrate as the front contact to enhance light scattering and maximize charge generation. To overcome voids and shunt paths introduced by the textured surface, we insert a SnO2 layer by atomic layer deposition at the textured fluorine-doped tin oxide/CdS interface. This results in a conformal deposition of CdS and an optimal bandgap profile in the Sb2(S,Se)3 absorber, which improves charge transport and lowers charge recombination at the interface and in the bulk, respectively. We achieve a certified efficiency of 10.70% sodium selenosulfate-based Sb2(S,Se)3 solar cells with excellent stability. We prove the generality of the method demonstrating selenourea-based Sb2(S,Se)3 and upscaling the solar cells to 1 cm2. The results represent a step forward in the development of antimony-based solar cells.

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Liu, S. et al. Buried interface molecular hybrid for inverted perovskite solar cells. Nature 632, 536–542 (2024).

Article Google Scholar

Keller, J. et al. High-concentration silver alloying and steep back-contact gallium grading enabling copper indium gallium selenide solar cell with 23.6% efficiency. Nat. Energy 9, 467–478 (2024).

Article Google Scholar

Green, M. A. et al. Solar cell efficiency tables (version 65). Prog. Photovolt. Res. Appl. 33, 3–15 (2025).

Article Google Scholar

Shi, J. et al. Multinary alloying for facilitated cation exchange and suppressed defect formation in kesterite solar cells with above 14% certified efficiency. Nat. Energy 9, 1095–1104 (2024).

Google Scholar

Tang, R. et al. Hydrothermal deposition of antimony selenosulfide thin films enables solar cells with 10% efficiency. Nat. Energy 5, 587–595 (2020).

Article Google Scholar

Zhou, Y. et al. Thin-film Sb2Se3 photovoltaics with oriented one-dimensional ribbons and benign grain boundaries. Nat. Photon. 9, 409–415 (2015).

Kondrotas, R. et al. Sb2S3 solar cells. Joule 2, 857–878 (2018).

Article Google Scholar

Wang, X. et al. Upper efficiency limit of Sb2Se3 solar cells. Joule 8, 2105–2122 (2024).

Article Google Scholar

Chen, C. et al. Open-circuit voltage loss of antimony chalcogenide solar cells: status, origin, and possible solutions. ACS Energy Lett. 5, 2294–2304 (2020).

Article Google Scholar

Qian, C. et al. Bifacial and semitransparent Sb2(S,Se)3 solar cells for single-junction and tandem photovoltaic applications. Adv. Mater. 35, 2303936 (2023).

Article Google Scholar

Wang, W. et al. Over 6% certified Sb2(S,Se)3 solar cells fabricated via in situ hydrothermal growth and postselenization. Adv. Electron. Mater. 5, 1800683 (2019).

Article Google Scholar

Zhao, Y. et al. Innovative in situ passivation strategy for high-efficiency Sb2(S,Se)3 solar cells. Adv. Mater. 36, 2410669 (2024).

Article Google Scholar

Dong, J. et al. Low-cost antimony selenosulfide with tunable bandgap for highly efficient solar cells. Small 19, 2206175 (2023).

Article Google Scholar

Liu, C. et al. Heterojunction lithiation engineering and diffusion-induced defect passivation for highly efficient Sb2(S,Se)3 solar cells. Energy Environ. Sci. 17, 8402–8412 (2024).

Article Google Scholar

Zhou, J. et al. Control of the phase evolution of kesterite by tuning of the selenium partial pressure for solar cells with 13.8% certified efficiency. Nat. Energy 8, 526–535 (2023).

Article Google Scholar

Jehl, Z. et al. Thinning of CIGS solar cells: part II: cell characterizations. Thin Solid Films 519, 7212–7215 (2011).

Article Google Scholar

Bothwell, A. M. et al. Performance analysis of 0.4–1.2-μm CdTe solar cells. IEEE J. Photovolt. 10, 259–266 (2020).

Chen, Z. et al. The effect of absorber thickness on the planar Sb2S3 thin film solar cell: trade-off between light absorption and charge separation. Sol. Energy 201, 323–329 (2020).

Article Google Scholar

Kambe, M. et al. Fabrication of A-Si:H solar cells on high haze SnO2:F thin films. In 2008 33rd IEEE Photovoltaic Specialists Conference 1–4 (IEEE, 2008).

Kim, M. et al. Conformal quantum dot-SnO2 layers as electron transporters for efficient perovskite solar cells. Science 375, 302–306 (2022).

Article Google Scholar

Ge, Y. et al. Suppressing wide-angle light loss and non-radiative recombination for efficient perovskite solar cells. Nat. Photon. 19, 170–177 (2025).

Article Google Scholar

Isabella, O. et al. Modulated surface textures for enhanced light trapping in thin-film silicon solar cells. Appl. Phys. Lett. 97, 101106 (2010).

Article Google Scholar

Tamang, A. et al. Light-trapping and interface morphologies of amorphous silicon solar cells on multiscale surface textured substrates. IEEE J. Photovolt. 4, 16–21 (2014).

Article Google Scholar

Jin, X. et al. Controllable solution-phase epitaxial growth of Q1D Sb2(S,Se)3/CdS heterojunction solar cell with 9.2% efficiency. Adv. Mater. 33, 2104346 (2021).

Article Google Scholar

Cao, Z. et al. Anomalous electron doping in CdS to promote the efficiency improvement in Sb2Se3 thin film solar cells. Adv. Funct. Mater. 35, 2418974 (2025).

Li, J. et al. Hydrazine hydrate-induced surface modification of CdS electron transport layer enables 10.30%-efficient Sb2(S,Se)3 planar solar cells. Adv. Sci. 9, 2202356 (2022).

Article Google Scholar

Zhao, Y. et al. Zinc-based electron transport materials for over 9.6%-efficient S-rich Sb2(S,Se)3 solar cells. J. Mater. Chem. A 9, 12644–12651 (2021).

Article Google Scholar

Waleed, A. et al. Performance improvement of solution-processed CdS/CdTe solar cells with a thin compact TiO2 buffer layer. Sci. Bull. 61, 86–91 (2016).

Article Google Scholar

Kartopu, G. et al. Enhancement of the photocurrent and efficiency of CdTe solar cells suppressing the front contact reflection using a highly-resistive ZnO buffer layer. Sol. Energy Mater. Sol. Cells 191, 78–82 (2019).

Article Google Scholar

Naghavi, N. et al. Buffer layers and transparent conducting oxides for chalcopyrite Cu(In,Ga)(S,Se)2 based thin film photovoltaics: present status and current developments. Prog. Photovolt. Res. Appl. 18, 411–433 (2010).

Yao, Y. et al. Achieving over 860 mV open-circuit voltage in low-Ag wide-bandgap Cu(In,Ga)Se2 solar cells through ion diffusion and band structure optimization. Adv. Funct. Mater. https://doi.org/10.1002/adfm.202423228 (2025).

Article Google Scholar

Rau, U. et al. Electronic properties of ZnO/CdS/Cu(In,Ga)Se2 solar cells-aspects of heterojunction formation. Thin Solid Films 387, 141–146 (2001).

Article Google Scholar

Ishizuka, S. et al. Fabrication of wide-gap Cu(In1−xGax)Se2 thin film solar cells: a study on the correlation of cell performance with highly resistive i-ZnO layer thickness. Sol. Energy Mater. Sol. Cells 87, 541–548 (2005).

Tseng, P. C. et al. Angle-resolved characteristics of silicon photovoltaics with passivated conical-frustum nanostructures. Sol. Energy Mater. Sol. Cells 95, 2610–2615 (2011).

Article Google Scholar

Lv, K. et al. Effect of thickness and Se distribution of Sb2S3−ySey thin films to solar cell efficiency. Mater. Today Energy 36, 101367 (2023).

Zhao, Y. et al. Regulating energy band alignment via alkaline metal fluoride assisted solution post-treatment enabling Sb2(S,Se)3 solar cells with 10.7% efficiency. Adv. Energy Mater. 12, 2103015 (2022).

Article Google Scholar

Dong, J. et al. Lowest open-circuit voltage deficit achievement to attain high efficient antimony selenosulfide solar cells. Adv. Funct. Mater. 34, 2309764 (2024).

Article Google Scholar

Neupane, S. et al. Ex situ bismuth doping for efficient CdSeTe thin-film solar cells with open-circuit voltages exceeding 900 mV. Joule 9, 101766 (2025).

Article Google Scholar

Luo, D. et al. Minimizing non-radiative recombination losses in perovskite solar cells. Nat. Rev. Mater. 5, 44–60 (2020).

Article Google Scholar

Zhu, J. et al. A donor-acceptor-type hole-selective contact reducing non-radiative recombination losses in both subcells towards efficient all-perovskite tandems. Nat. Energy 8, 714–724 (2023).

Article Google Scholar

Wang, W. et al. Double interface modification promotes efficient Sb2Se3 solar cell by tailoring band alignment and light harvest. J. Energy Chem. 70, 191–200 (2022).

Article Google Scholar

Yu, H. et al. Superfast room-temperature activation of SnO2 thin films via atmospheric plasma oxidation and their application in planar perovskite photovoltaics. Adv. Mater. 30, 1704825 (2018).

Article Google Scholar

Paik, M. J. et al. Ultrafine SnO2 colloids with enhanced interface quality for high-efficiency perovskite solar cells. Joule 8, 2073–2086 (2024).

Article Google Scholar

Gao, D. et al. Long-term stability in perovskite solar cells through atomic layer deposition of tin oxide. Science 386, 187–192 (2024).

Article Google Scholar

Park, S. M. et al. Low-loss contacts on textured substrates for inverted perovskite solar cells. Nature 624, 289–294 (2023).

Article Google Scholar

Lan, Z. et al. Homogenizing the electron extraction via eliminating low-conductive contacts enables efficient perovskite solar cells with reduced up-scaling losses. Adv. Funct. Mater. 34, 2316591 (2024).

Article Google Scholar

Lian, W. et al. Probing the trap states in n–i–p Sb2(S,Se)3 solar cells by deep-level transient spectroscopy. J. Chem. Phys. 153, 124703 (2020).

Lian, W. et al. Distinctive deep-level defects in non-stoichiometric Sb2Se3 photovoltaic materials. Adv. Sci. 9, 2105268 (2022).

Article Google Scholar

Huang, M. et al. Complicated and unconventional defect properties of the quasi-one-dimensional photovoltaic semiconductor Sb2Se3. ACS Appl. Mater. Interfaces 11, 15564–15572 (2019).

Article Google Scholar

Wang, J. et al. Pd(II)/Pd(IV) redox shuttle to suppress vacancy defects at grain boundaries for efficient kesterite solar cells. Nat. Commun. 15, 4344 (2024).

Article Google Scholar

Shen, G. et al. Strong chelating additive and modified electron transport layer for 8.26%-efficient Sb2S3 solar cells. Adv. Energy Mater. https://doi.org/10.1002/aenm.202406051 (2025).

Article Google Scholar

Gu, Y. et al. Solvent annealing enabling reconstruction of cadmium sulfide film for improved heterojunction quality and photovoltaic performance of antimony selenosulfide solar cells. Adv. Funct. Mater. 34, 2311577 (2024).

Article Google Scholar

Chen, G. et al. Suppressing buried interface nonradiative recombination losses toward high-efficiency antimony triselenide solar cells. Adv. Mater. 36, 2308522 (2024).

Article Google Scholar

Ding, Y. et al. Single-crystalline TiO2 nanoparticles for stable and efficient perovskite modules. Nat. Nanotechnol. 17, 598–605 (2022).

Article Google Scholar

Gong, X. et al. Highly efficient perovskite solar cells with gradient bilayer electron transport materials. Nano Lett. 18, 3969–3977 (2018).

Article Google Scholar

Shi, J. et al. From ultrafast to ultraslow: charge-carrier dynamics of perovskite solar cells. Joule 2, 879–901 (2018).

Article Google Scholar

Yin, K. et al. Gradient bandgaps in sulfide kesterite solar cells enable over 13% certified efficiency. Nat. Energy 10, 105–214 (2025).

Google Scholar

Liang, X. et al. Reduction of bulk and interface defects via photo-annealing treatment for high-efficiency antimony selenide solar cells. Energy Environ. Sci. 17, 9499–9508 (2024).

Article Google Scholar

Li, Z. et al. 9.2%-efficient core-shell structured antimony selenide nanorod array solar cells. Nat. Commun. 10, 125 (2019).

Article Google Scholar

Wen, X. et al. Vapor transport deposition of antimony selenide thin film solar cells with 7.6% efficiency. Nat. Commun. 9, 2179 (2018).

Article Google Scholar

Zhang, Y. et al. Selenium-graded Sb2(S1-xSex)3 for planar heterojunction solar cell delivering a certified power conversion efficiency of 5.71%. Sol. RRL 1, 1700017 (2017).

Article Google Scholar

Chen, C. et al. 6.5% certified efficiency Sb2Se3 solar cells using PbS colloidal quantum dot film as hole-transporting layer. ACS Energy Lett. 2, 2125–2132 (2017).

Article Google Scholar

Chen, S. et al. A codoping strategy for efficient planar heterojunction Sb2S3 solar cells. Adv. Energy Mater. 12, 2202897 (2022).

Article Google Scholar

Che, B. et al. Post-deposition treatment of Sb2Se3 enables defect passivation and increased carrier transport dimension for efficient solar cell application. Angew. Chem. Int. Ed. 64, e202425639 (2025).

Shi, X. et al. Nanorod-textured Sb2(S,Se)3 bilayer with enhanced light harvesting and accelerated charge extraction for high-efficiency Sb2(S,Se)3 solar cells. Chem. Eng. J. 437, 135341 (2022).

Article Google Scholar

Wang, L. et al. Stable 6%-efficient Sb2Se3 solar cells with a ZnO buffer layer. Nat. Energy 2, 17046 (2017).

Article Google Scholar

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This work is supported by the National Key Research and Development Program of China (grant number 2024YFB4205300, Y.Z.), the National Natural Science Foundation of China (grant number U1902218, Y.Z.). This work is supported by the National Natural Science Foundation of China (grant number 22275180, T.C.) and the Fundamental Research Funds for the Central Universities (grant number WK2490000002, T.C.). We thank D. M. Li from Institute of Physics, Chinese Academy of Sciences for M-TPC/TPV test support and helpful discussions and X. Lou from Instrumentation and Service Center for Molecular Sciences at Westlake University for ARR measurements and helpful discussions.

Institute of Photoelectronic Thin Film Devices and Technology, State Key Laboratory of Photovoltaic Materials and Cells, Engineering Research Center of Thin Film Optoelectronics Technology, Ministry of Education, Nankai University, Tianjin, People’s Republic of China

Jiabin Dong, Qianqian Gao, Huizhen Liu, Zixiu Cao, Yue Liu, Han Xu, Rutao Meng, Jianpeng Li, Xuejun Xu, Zijun Zhang, Tianchi Li & Yi Zhang

Key Laboratory of Weak-Light Nonlinear Photonics, Ministry of Education, School of Physics, Nankai University, Tianjin, People’s Republic of China

Li Wu & Pan Zhang

Hefei National Research Center for Physical Science at the Microscale, Deep Space Exploration Laboratory, Department of Materials Science and Engineering, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, People’s Republic of China

Junjie Yang, Rongfeng Tang, Jianyu Li & Tao Chen

Institute of Micronano Devices & Solar Cells, College of Physics & Information Engineering, Fuzhou University, Fuzhou, People’s Republic of China

Weihuang Wang

Dalian National Laboratory for Clean Energy, iChEM, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, People’s Republic of China

Shengzhong ‘Frank’ Liu

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J.D. and Y.Z. conceived of the original concept and designed the experiments. J.D., H.L. and Q.G. fabricated the devices and conducted the photovoltaic and optical characterization and analysis. J.Y., R.T., Jianyu Li and T.C. did the O-DLTS and TAS measurements and performed the analysis. Z.C., Y.L., H.X., R.M., Jianpeng Li, X.X. and Z.Z. assisted with the device fabrication, characterization and discussions. P.Z., T.L. and L.W. did the Rietveld analysis. W.W. participated in the GIXRD data analysis and provided constructive suggestions for refining the data analysis. J.D. and Y.Z. co-wrote the paper. Y.Z., L.W., T.C. and S.(F.)L. revised the paper with all authors commenting on the paper.

Correspondence to Tao Chen, Shengzhong ‘Frank’ Liu or Yi Zhang.

The authors declare no competing interests.

Nature Energy thanks Guojia Fang and the other, anonymous, reviewer(s) for their contribution to the peer review of this work.

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Dong, J., Gao, Q., Wu, L. et al. Carrier management through electrode and electron-selective layer engineering for 10.70% efficiency antimony selenosulfide solar cells. Nat Energy (2025). https://doi.org/10.1038/s41560-025-01792-y

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Received: 07 November 2024

Accepted: 06 May 2025

Published: 09 June 2025

DOI: https://doi.org/10.1038/s41560-025-01792-y

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