Earth-abundant and low-cost CZTS solar cell on flexible molybdenum foil†
Abstract
Flexible Cu2ZnSnS4 (CZTS) solar cell absorbers were prepared by sulfurizing Cu–Zn–Sn precursors which were co-electrodeposited on Mo-coated molybdenum foil in a one-step process. A photovoltaic device with 3.82% conversion efficiency based on the illumination area of 0.35 cm2 was attained, which is the first efficiency report of flexible CZTS-based solar cells on molybdenum foil.