Journal of Materials Science: Materials in Electronics

, Volume 30, Issue 23, pp 20443–20450 | Cite as

Improved solution-processed Cu2ZnSnS4 solar cells using a temporary Ag layer

  • Kang Gu
  • Ruiting HaoEmail author
  • Jie GuoEmail author
  • Abuduwayiti AierkenEmail author
  • Xinxing Liu
  • Faran Chang
  • Yong Li
  • Guoshuai Wei
  • Bin Liu
  • Lu Wang
  • Shuaihui Sun
  • Xiaole Ma


A 25 nm thick Ag thin film was sputtered between the Cu2ZnSnS4 (CZTS) absorber and Mo electrode to improve the back contact in CZTS solar cells. The CZTS absorber was fabricated via a cost-effective N,N-dimethylformamide-based solution method. X-ray diffraction and Raman spectroscopy demonstrated that Ag diffused into the CZTS and partially substituted Cu, which resulted in an increased lattice constant a and grain size. Ag doping of CZTS (ACZTS) reduced both the Sn-loss and the presence of voids. An ACZTS photovoltaic device (ITO/i-ZnO/CdS/ACZTS/Mo) was fabricated and showed higher EQE than the CZTS device over the wavelength range of 450–800 nm. The open circuit voltage increased (Voc) from 543 to 631 mV, the short circuit current density (Jsc) increased from 10.36 to 14.37 mA, and the efficiency increased from 2.02 to 3.43% after sputtering the Ag layer. This is mainly because Ag functions as a temporary protective layer that made a tighter combination between Mo and the CZTS absorber.



This study was supported by the National Natural Science Foundation of China (Nos. 61774130, 11474248, 61176127, 61006085, 61534008), the Key Program for International S&T cooperation Projects of China (No. 2011DFA62380), and the Ph.D. Programs Foundation of Ministry of Education of China (No. 20105303120002).


  1. 1.
    J. Li, Y. Zhang, H. Wang, L. Wu, J. Wang, W. Liu, Z. Zhou, Q. He, Y. Sun, Sol. Energy Mater. Sol. Cells 132, 363 (2015)CrossRefGoogle Scholar
  2. 2.
    F. Liu, K. Sun, W. Li, C. Yan, H. Cui, L. Jiang, X. Hao, A. Martin, Appl. Phys. Lett. (2015). CrossRefGoogle Scholar
  3. 3.
    J. Kumar, S. Ingole, J. Alloys Compd. 727, 1089 (2017)CrossRefGoogle Scholar
  4. 4.
    F. Liu, J. Huang, K. Sun, C. Yan, Y. Shen, J. Park, A. Pu, F. Zhou, X. Liu, J.A. Stride, M.A. Green, X. Hao, NPG Asia Mater. 9, e401 (2017)CrossRefGoogle Scholar
  5. 5.
    W. Li, X. Liu, H. Cui, S. Huang, X. Hao, J. Alloys Compd. 625, 277 (2015)CrossRefGoogle Scholar
  6. 6.
    R. Sun, D. Zhuang, M. Zhao, Q. Gong, M. Scarpulla, Y. Wei, G. Ren, Y. Wu, Sol. Energy Mater. Sol. Cells 174, 494 (2018)CrossRefGoogle Scholar
  7. 7.
    W. Wang, M.T. Winkler, O. Gunawan, T. Gokmen, T.K. Todorov, Y. Zhu, D.B. Mitzi, Adv. Energy Mater. 4, 1 (2014)CrossRefGoogle Scholar
  8. 8.
    P. Jackson, R. Wuerz, D. Hariskos, E. Lotter, W. Witte, M. Powalla, Phys. Status Solidi – Rapid Res. Lett. 10, 583 (2016)CrossRefGoogle Scholar
  9. 9.
    X. Liu, Y. Feng, H. Cui, F. Liu, X. Hao, G. Conibeer, D.B. Mitzi, M. Green, Res. Appl. 24, 879 (2016)Google Scholar
  10. 10.
    K. Kaur, N. Kumar, M. Kumar, J. Mater. Chem. A 5, 3069 (2017)CrossRefGoogle Scholar
  11. 11.
    D.B. Mitzi, O. Gunawan, T.K. Todorov, K. Wang, S. Guha, Sol. Energy Mater. Sol. Cells 95, 1421 (2011)CrossRefGoogle Scholar
  12. 12.
    H. Cui, X. Liu, F. Liu, X. Hao, N. Song, C. Yan, Appl. Phys. Lett. 104, 041115 (2014)CrossRefGoogle Scholar
  13. 13.
    Q. Zhao, R. Hao, S. Liu, M. Yang, X. Liu, F. Chang, Y. Lu, S. Wang, Physica B 523, 62 (2017)CrossRefGoogle Scholar
  14. 14.
    G. Saito, A. Takeuchi, H. Katagiri, K. Ebina, K. Jimbo, H. Araki, M. Yamazaki, M. Nagahashi, W.S. Maw, K. Oishi, Thin Solid Films 517, 1449 (2008)CrossRefGoogle Scholar
  15. 15.
    K.G. Deepa, N. Jampana, J. Anal. Appl. Pyrolysis 117, 141 (2016)CrossRefGoogle Scholar
  16. 16.
    C. Peng, J. Chu, J. Ge, P. Yang, S. Zuo, J. Jiang, Z. Huang, L. Yang, Sol. Energy Mater. Sol. Cells 125, 20 (2014)CrossRefGoogle Scholar
  17. 17.
    Y.F. Qi, D.X. Kou, W.H. Zhou, Z.J. Zhou, Q.W. Tian, Y.N. Meng, X.S. Liu, Z.L. Du, S.X. Wu, Energy Environ. Sci. 10, 2401 (2017)CrossRefGoogle Scholar
  18. 18.
    K. Tanaka, N. Moritake, M. Oonuki, H. Uchiki, Jpn. J. Appl. Phys. 47, 598 (2008)CrossRefGoogle Scholar
  19. 19.
    T. Gershon, Y.S. Lee, P. Antunez, R. Mankad, S. Singh, D. Bishop, O. Gunawan, M. Hopstaken, R. Haight, Adv. Energy Mater. 6, 1 (2016)Google Scholar
  20. 20.
    W. Li, J. Chen, C. Yan, X. Hao, J. Alloys Compd. 632, 178 (2015)CrossRefGoogle Scholar
  21. 21.
    K. Li, B. Chai, T. Peng, L. Zan, RSC. Adv. 3, 253 (2013)CrossRefGoogle Scholar
  22. 22.
    C.J. Hages, M.J. Koeper, R. Agrawal, Sol. Energy Mater. Sol. Cells 145, 342 (2016)CrossRefGoogle Scholar
  23. 23.
    A. Guchhait, Z. Su, Y.F. Tay, S. Shukla, W. Li, S.W. Leow, J.M.R. Tan, S. Lie, O. Gunawan, L.H. Wong, ACS Energy Lett. 1, 1256 (2016)CrossRefGoogle Scholar
  24. 24.
    M. Himmrich, H. Haeuseler, Spectrochim. Acta A 47, 933 (1991)CrossRefGoogle Scholar
  25. 25.
    H. Katagiri, K. Jimbo, M. Tahara, H. Araki, K. Oishi, Mater. Res. 1165, M04 (2009)Google Scholar
  26. 26.
    W. Gong, T. Tabata, K. Takei, M. Morihama, T. Maeda, T. Wada, Phys. Status Solidi C 12, 700 (2015)CrossRefGoogle Scholar
  27. 27.
    K. Sato, M. Fujiyoshi, M. Date, T. Shoji, K.N. Tu, J. Mater. Res. 19, 2887 (2005)Google Scholar
  28. 28.
    Y. Feng, B. Yu, G. Cheng, T. Lau, Z. Li, L. Yin, Q. Song, C. Yang, X. Xiao, J. Mater. Chem. C 3, 9650 (2015)CrossRefGoogle Scholar
  29. 29.
    J.J. Scragg, Copper Zinc Tin Sulfide Thin Films for Photovoltaics: Synthesis and Characterisation by Electrochemical Methods (Springer, Berlin, 2011)CrossRefGoogle Scholar
  30. 30.
    H. Matsushita, T. Maeda, A. Katsui, T. Takizawa, J. Cryst. Growth 208, 416 (2000)CrossRefGoogle Scholar
  31. 31.
    M.T. Winkler, W. Wang, O. Gunawan, H.J. Hovel, T.K. Todorov, D.B. Mitzi, Energy Environ. Sci. 7, 1029 (2014)CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  • Kang Gu
    • 1
  • Ruiting Hao
    • 1
    • 2
    Email author
  • Jie Guo
    • 1
    • 2
    Email author
  • Abuduwayiti Aierken
    • 1
    Email author
  • Xinxing Liu
    • 1
  • Faran Chang
    • 1
  • Yong Li
    • 1
  • Guoshuai Wei
    • 2
  • Bin Liu
    • 2
  • Lu Wang
    • 2
  • Shuaihui Sun
    • 2
  • Xiaole Ma
    • 2
  1. 1.School of Energy and Environment Science, Key Laboratory of Renewable Energy Advanced Materials and Manufacturing Technology Ministry of EducationYunnan Normal UniversityKunmingPeople’s Republic of China
  2. 2.Yunnan Key Lab of Opto-electronic Information TechnologyYunnan Normal UniversityKunmingPeople’s Republic of China

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