Comparative Study between Spin Coated Cu2ZnSnS4 and Cu2FeSnS4 Thin Films for Thin-Film Solar Cell Applications

In this report a comparative study of two thin films with optimal structural and opto-electrical properties is considered. Crystalline order, amount of defects and the grain size are important parameters which affect the physical properties of thin film. Two thin films of Cu 2 ZnZnS 4 (CZTS) and Cu...

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Bibliographic Details
Published in:Applied solar energy 2022-12, Vol.58 (6), p.751-759
Main Author: Hussein, H. M.
Format: Article
Language:English
Subjects:
Absorption
Absorption spectra
Absorptivity
Comparative studies
Copper zinc tin sulfide
Crystal defects
Electrical Machines and Networks
Electrical properties
Energy storage
Engineering
Grain size
Hybridization
Iron
Magnetic properties
Optical properties
Photovoltaic cells
Physical properties
Polarizability
Power Electronics
Refractivity
Solar cells
Solar energy
Solar Engineering Materials Science
Thin films
Zinc
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Summary:In this report a comparative study of two thin films with optimal structural and opto-electrical properties is considered. Crystalline order, amount of defects and the grain size are important parameters which affect the physical properties of thin film. Two thin films of Cu 2 ZnZnS 4 (CZTS) and Cu 2 FeSnS 4 (CFTS) were compared to get the best structural and optoelectrical properties. It was observed after replacing Zn element by the Fe(III) element to obtain CFTS compound, the crystallinity, absorption coefficient, refractive index and other optical properties have been improved resulting in an increase in the polarizability and sensitivity of the CFTS thin film to the UV-Vis spectrum. Experimental results showed that Fe(III) element has stronger hybridization and is more efficient in energy storage than Zn(II) element. The magnetic energy generated by the substitution of the Fe element in CZTS gave a new photo-magnetic property that was stored and distributed in an external absorption band in the UV-vis ranges. Depending on these enhancements, the authors believe that CFTS thin films are a good competitor to CZTS thin films and can be used as an absorbent layer in thin film solar cells.
ISSN:0003-701X
1934-9424
DOI:10.3103/S0003701X22060081