Effect of annealing atmosphere on structural and optical properties of CZTS thin films prepared by spin-coating

Authors

  • S Akhanda Department of Electrical and Electronic Engineering, University of Dhaka, Dhaka
  • R Matin Institute of Fuel Research and Development (IFRD), Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka
  • MS Bashar Institute of Fuel Research and Development (IFRD), Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka
  • M Sultana Institute of Fuel Research and Development (IFRD), Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka
  • A Kowsar BCSIR Laboratories, Rajshahi
  • M Rahaman Institute of Fuel Research and Development (IFRD), Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka
  • ZH Mahmood Department of Electrical and Electronic Engineering, University of Dhaka, Dhaka

DOI:

https://doi.org/10.3329/bjsir.v53i1.35905

Keywords:

CZTS thin-film, Spin coating, X-ray diffraction, Scanning electron microscope, UV-visible spectrometry

Abstract

Copper zinc tin sulfide (CZTS) thin films were deposited by spin coating procedure of a sol-gel prepared from the solution of copper (II)chloride, zinc acetate, tin (II) chloride and thiourea in 2-methoxyehtanol followed by annealing under two different atmospheres viz. N2 gas and Sulphur (S) powder at 530 °C for 5 minutes. The effect of different annealing atmosphere on the structural and optical properties of the CZTS thin films were investigated. The X-ray diffraction study showed higher intensity peaks for films annealed under N2 gas ambient. SEM study revealed that the surfaces of the films in both cases are non-uniform. Films annealed in N2 gas atmosphere showed better absorption coefficient (exceeding 104 cm-1 in the visible region) than the sulphurized ones. The optical band gap (Eg) of the films were found to be in the range of 1.46 - 1.53 eV.

Bangladesh J. Sci. Ind. Res.53(1), 13-20, 2018

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Author Biography

S Akhanda, Department of Electrical and Electronic Engineering, University of Dhaka, Dhaka



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Published

2018-03-11

How to Cite

Akhanda, S., Matin, R., Bashar, M., Sultana, M., Kowsar, A., Rahaman, M., & Mahmood, Z. (2018). Effect of annealing atmosphere on structural and optical properties of CZTS thin films prepared by spin-coating. Bangladesh Journal of Scientific and Industrial Research, 53(1), 13–20. https://doi.org/10.3329/bjsir.v53i1.35905

Issue

Vol. 53 No. 1 (2018)

Section

Articles

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