Sol–gel processed Cu2ZnSnS4 thin films for a photovoltaic absorber layer without sulfurization

Sol–gel processed Cu 2 ZnSnS 4 (CZTS) thin films were fabricated without sulfurization for application as a photovoltaic absorber layer. The precursor solution was made from CuCl 2 , Zn(ac) 2 , SnCl 2 , thiourea, and 2-methoxyethanol and the spin-coated film was annealed at temperature above 500 °C...

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