Research Article

Growth of Cu2ZnSnS4 Thin Films Using Moderate Annealing Temperature and Short Dwell Time

Volume: 40 Number: 3 September 30, 2019
EN TR

Growth of Cu2ZnSnS4 Thin Films Using Moderate Annealing Temperature and Short Dwell Time

Abstract

In this study CZTS thin films were fabricated by a two-stage process that sputter deposition of metallic Cu, Zn, and Sn on Mo coated glass substrates and annealing process at 500 °C using various short dwell times (4, 8, and 12 min) using Rapid Thermal Processing (RTP) approach. The X-ray diffraction (XRD), Raman spectroscopy, Scanning Electron Microscopy (SEM), Energy Dispersive X-ray Spectroscopy (EDX), and photoluminescence were employed to characterize the CZTS samples synthesized employing different sulfurization times. It was observed that all CZTS thin films showed Cu-poor and Zn-rich composition according to EDX results. XRD patterns displayed formation of kesterite CZTS and CuS secondary phases. Raman spectra of the films justified formation of kesterite CZTS phase for all CZTS thin films and formation of CTS phase, which is difficult to distinguish by XRD pattern of the films for CZTS-8 and CZTS-12 samples. SEM images of the films displayed dense, void-free, and inhomogeneous surface structure regardless of the sulfurization time. The optical band gap of the films as determined by photoluminescence was found to be about 1.36-1.37 eV.

Keywords

Cu2ZnSnS4,sputtering,annealing time,annealing temperature,RTP

References

  1. [1] Kato T., Wu J.L., Hirai Y., Sugimoto H., Bermudez V., Record Efficiency for Thin-Film Polycrystalline Solar Cells Up to 22.9% Achieved by Cs-Treated Cu(In,Ga)(Se,S)(2), Ieee J. Photovolt., 9 (2019) 325-330.
  2. [2] Katagiri H., Sasaguchi N., Hando S., Hoshino S., Ohashi J. and Yokota T., Preparation and evaluation of Cu2ZnSnS4 thin films by sulfurization of E-B evaporated precursors, Sol. Energ. Mat. Sol. C., 49 (1997) 407-414.
  3. [3] Shockley W. and Queisser H.J., Detailed Balance Limit of Efficiency of p‐n Junction Solar Cells, JPN J. Appl. Phys., 32 (1961) 510-519.
  4. [4] Wang W., Winkler M.T., Gunawan O., Gokmen T., Todorov T.K., Zhu Y. and Mitzi D.B., Device Characteristics of CZTSSe Thin-Film Solar Cells with 12.6% Efficiency, Adv. Energy Mater., 4 (2014) 1301465.
  5. [5] Wang K., Gunawan O., Todorov T., Shin B., Chey S.J., Bojarczuk N.A., Mitzi D. and Guha S., Thermally evaporated Cu2ZnSnS4 solar cells, Appl. Phys. Lett., 97 (2010) 143508.
  6. [6] Mkawi E.M., Al-Hadeethi Y., Shalaan E. and Bekyarova E., Substrate temperature effect during the deposition of (Cu/Sn/Cu/Zn) stacked precursor CZTS thin film deposited by electron-beam evaporation, J. Mater. Sci-Mater. El., 29 (2018) 20476-20484.
  7. [7] Olgar M.A., Optimization of sulfurization time and temperature for fabrication of Cu2ZnSnS4 (CZTS) thin films, Superlattice Microst., 126 (2019) 32-41.
  8. [8] Vanalakar S.A., Agawane G.L., Shin S.W., Suryawanshi M.P., Gurav K.V., Jeon K.S., Patil P.S., Jeong C.W., Kim J.Y. and Kim J.H., A review on pulsed laser deposited CZTS thin films for solar cell applications, J. Alloy. Compd., 619 (2015) 109-121.
  9. [9] Tanaka K., Fukui Y., Moritake N. and Uchiki H., Chemical composition dependence of morphological and optical properties of Cu2ZnSnS4 thin films deposited by sol-gel sulfurization and Cu2ZnSnS4 thin film solar cell efficiency, Sol. Energ. Mat. Sol. C., 95 (2011) 838-842.
  10. [10] Hamada T., Fukuyama A., Jiang F., Ikeda S. and Ikari T., Effect of preheating time on uniformity of electrodeposited Cu2ZnSnS4 thin films studied by carrier lifetime and photoluminescence measurements, Phys. Status Solidi C., 12 (2015) 725-728.
APA
Olğar, M. A., & Seyhan, A. (2019). Growth of Cu2ZnSnS4 Thin Films Using Moderate Annealing Temperature and Short Dwell Time. Cumhuriyet Science Journal, 40(3), 554-562. https://doi.org/10.17776/csj.527260
AMA
1.Olğar MA, Seyhan A. Growth of Cu2ZnSnS4 Thin Films Using Moderate Annealing Temperature and Short Dwell Time. CSJ. 2019;40(3):554-562. doi:10.17776/csj.527260
Chicago
Olğar, Mehmet Ali, and Ayşe Seyhan. 2019. “Growth of Cu2ZnSnS4 Thin Films Using Moderate Annealing Temperature and Short Dwell Time”. Cumhuriyet Science Journal 40 (3): 554-62. https://doi.org/10.17776/csj.527260.
EndNote
Olğar MA, Seyhan A (September 1, 2019) Growth of Cu2ZnSnS4 Thin Films Using Moderate Annealing Temperature and Short Dwell Time. Cumhuriyet Science Journal 40 3 554–562.
IEEE
[1]M. A. Olğar and A. Seyhan, “Growth of Cu2ZnSnS4 Thin Films Using Moderate Annealing Temperature and Short Dwell Time”, CSJ, vol. 40, no. 3, pp. 554–562, Sept. 2019, doi: 10.17776/csj.527260.
ISNAD
Olğar, Mehmet Ali - Seyhan, Ayşe. “Growth of Cu2ZnSnS4 Thin Films Using Moderate Annealing Temperature and Short Dwell Time”. Cumhuriyet Science Journal 40/3 (September 1, 2019): 554-562. https://doi.org/10.17776/csj.527260.
JAMA
1.Olğar MA, Seyhan A. Growth of Cu2ZnSnS4 Thin Films Using Moderate Annealing Temperature and Short Dwell Time. CSJ. 2019;40:554–562.
MLA
Olğar, Mehmet Ali, and Ayşe Seyhan. “Growth of Cu2ZnSnS4 Thin Films Using Moderate Annealing Temperature and Short Dwell Time”. Cumhuriyet Science Journal, vol. 40, no. 3, Sept. 2019, pp. 554-62, doi:10.17776/csj.527260.
Vancouver
1.Mehmet Ali Olğar, Ayşe Seyhan. Growth of Cu2ZnSnS4 Thin Films Using Moderate Annealing Temperature and Short Dwell Time. CSJ. 2019 Sep. 1;40(3):554-62. doi:10.17776/csj.527260