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Research Article Open Access

Impact of thermal treatment parameter on the properties of Cu2ZnSnS4 solar absorber layer

Indu B. Vashistha1*, Mahesh C. Sharma2, S. K. Sharma1  



1Department of Physics, Malaviya National Institute of Technology, Jaipur 302017, India.

2National Institute of Solar Energy, Gurgaon 122003, India

Adv. Mater. Proc., 2018, 3 (1), 13-16

DOI: 10.5185/amp.2018/677

Publication Date (Web):01 January 2018

Copyright © IAAM-VBRI Press



In this present study Cu2ZnSnS4 (CZTS) thin films were grown by Chemical Bath Deposition (CBD) method at optimized parameters. These as grown CZTS films were annealed at 3000C for different time 1 hr, 2 hr, 3 hr. These films were characterized by scanning electron microscope (SEM), UV-VIS Spectrophotometer, I-V measurement for study of surface morphology, optical and electrical properties respectively. The SEM analysis revealed that surface modification takes place as the annealing time increases. The optical study shows high absorption in visible region and as annealing time increase red shift in energy band gap occurred. The current-voltage characteristics of the specimen indicated that conductivity of film increases with increased annealing time. Thus, annealing time has prominent impact on surface modification which changes optoelectronic properties of CZTS thin film and results shows that film annealed at 3000C for 3 hr gives high absorption and better conductivity for CZTS thin films. Copyright © 2018 VBRI Press.


Thin films, annealing, surface modification, optical properties, electric properties.