Abstract

For thin film photovoltaic applications, Copper Zinc Tin Sulfide (CZTS) is proposed to be an effective photon absorber layer mainly because of its non-toxic constituents with high earth abundance and absorption coefficient. Recently, interests toward fabrication of CZTS along with its analogous selenide (CZTSe) and sulfoselenide (CZTSSe) over a large area at low cost is increased. The fundamental properties of CZTS like crystal structure and associated defects at various compositional regimes are critically reviewed. Also, the insinuating factors associated with CZTS that affects the conversion efficiency are discussed. Extensive discussion on the reported works on fabrication of CZTS through vacuum techniques like sputtering, evaporation and pulsed laser deposition (PLD) along with non-vacuum techniques like electrodeposition, spray pyrolysis, spin coating and dip coating are discussed. Finally, the future development prospects of CZTS solar cells are also explored in detail. This review is thus targeted to emphasize the current trends and future research prospective of CZTS as a photon absorber material for thin film solar cells.

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