Electrodeposition
of CZTS thin films on ZnS was carried using a 2-electrode method to fabricate
superstrate structure solar cells. A comprehensive study was performed on the
effects of trisodium citrate on the CZTS electrolyte bath. In the present
investigation, it is demonstrated that using a CZTS electrolyte with a
concentration of 0.2 M trisodium citrate yields CZTS thin films with an
electronic bandgap of 1.52 eV, a p-type nature, and good uniformity, which are
all results desired for the fabrication of thin film solar cells.
Characterization was performed using UV-Vi-IR optical absorption, SEM imaging,
Raman spectrometry, and photoelectrochemical cells conducted for electronic
bandgap, morphology, chemical composition, and semiconductor conductivity,
respectively.
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