Computational Investigations on CZTS Thin-Film Layers Adopting Grating Structures

International Journal of Electronics and Communication Engineering
© 2019 by SSRG - IJECE Journal
Volume 6 Issue 8
Year of Publication : 2019
Authors : Nosheen Memon, Muhammad Rafique Naich, Agha Zafarullah Pathan, Baqir Ali Mirjat, Muzamil Faiz
How to Cite?

Nosheen Memon, Muhammad Rafique Naich, Agha Zafarullah Pathan, Baqir Ali Mirjat, Muzamil Faiz, "Computational Investigations on CZTS Thin-Film Layers Adopting Grating Structures," SSRG International Journal of Electronics and Communication Engineering, vol. 6,  no. 8, pp. 38-43, 2019. Crossref,


In the past few years, Copper zinc tin sulfide (Cu2ZnSnS4, CZTS) has attracted significant attention as a next-generation absorber material for the production of thin-film solar cells on large scales due to the high natural abundance of all constituents, the tuneable direct bandgap energy ranging from 1.0 to 1.5 eV, and significant absorption coefficient. Copper zinc tin sulfide (CZTS) is a promising material for use at a low cost.
In this work, simulations were performed on CZTS thin-film solar cell (TFSC) using the FDTD method; the Continuous Gaussian Wave of 1.55 wavelength light incident input applied. Three different methods performed in simulations. Results indicated that the heat absorption efficiency of the solar cell increased when grating structures are designed to be on the surface of the solar cells. The efficiency was increased by 17.64%. It observed that when the grating period “k” is varied, the absorption efficiency is also varied; higher the grating period lower the absorption efficiency and vice versa. The weighted reflectance of the CZTS TFSCs having grating structure reduced to 1% of the value. It also observed that maximum absorption efficiency occurs at lower wavelengths of 480nm to 800nm. When the wavelength increased beyond, then there is no noticeable change in its effectiveness.


CZTS, TFSC, FDTD method, Adopting Grating Structures, solar cell


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