Effect of SnS buffer layer on solution process prepared Cu2ZnSnS4 solar cells

S. H. Wu, Q. Z. Guan, K. T. Huang, Chuan-Feng Shih, Y. Y. Wang

Research output: Contribution to journalArticle

Abstract

The effects of SnS buffer layers on the interfacial morphology, electrical model, and photovoltaic properties of solution-prepared CZTS devices were examined. Two SnS buffer layers were prepared and compared. The CZTS device that was fabricated on the as-coated SnS had many interfacial voids. By contrast, the annealed SnS layer markedly improved the CZTS quality by eliminating the voids at the CZTS-MoS2 interface. An additional capacitance-resistance circuit in parallel that was responsible for the interfacial defects was required to fit the admittance spectrum of the CZTS device prepared on the as-coated SnS. The efficiency of the CZTS solar cell prepared on the annealed SnS was as high as 8.8%, open-circuit voltage was 570 mV, short-circuit current was 24.08 mA/cm2, and fill factor was 64.5%. The open-circuit voltages and fill factor increased 43% and 72%, respectively, when the interlayer changed from the as-coated SnS to the annealed SnS.

Original languageEnglish
Pages (from-to)147-151
Number of pages5
JournalChalcogenide Letters
Volume14
Issue number4
Publication statusPublished - 2017 Apr 1

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Open circuit voltage
Buffer layers
Solar cells
buffers
solar cells
open circuit voltage
voids
Short circuit currents
Capacitance
short circuit currents
electrical impedance
Defects
Networks (circuits)
interlayers
capacitance
defects
Cu2ZnSnS4

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Chemistry(all)
  • Physics and Astronomy(all)

Cite this

Wu, S. H., Guan, Q. Z., Huang, K. T., Shih, C-F., & Wang, Y. Y. (2017). Effect of SnS buffer layer on solution process prepared Cu2ZnSnS4 solar cells. Chalcogenide Letters, 14(4), 147-151.
Wu, S. H. ; Guan, Q. Z. ; Huang, K. T. ; Shih, Chuan-Feng ; Wang, Y. Y. / Effect of SnS buffer layer on solution process prepared Cu2ZnSnS4 solar cells. In: Chalcogenide Letters. 2017 ; Vol. 14, No. 4. pp. 147-151.
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Wu, SH, Guan, QZ, Huang, KT, Shih, C-F & Wang, YY 2017, 'Effect of SnS buffer layer on solution process prepared Cu2ZnSnS4 solar cells', Chalcogenide Letters, vol. 14, no. 4, pp. 147-151.

Effect of SnS buffer layer on solution process prepared Cu2ZnSnS4 solar cells. / Wu, S. H.; Guan, Q. Z.; Huang, K. T.; Shih, Chuan-Feng; Wang, Y. Y.

In: Chalcogenide Letters, Vol. 14, No. 4, 01.04.2017, p. 147-151.

Research output: Contribution to journalArticle

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