The investigation of current-voltage characteristics based on poly(2-methoxy,5-octoxy)-1,4-phenylenevinylene-PbSe composite solar cells

Abstract

Abstract A bulk heterojunction photovoltaic device was prepared based on the blend of conjugated poly[(2-methoxy,5-octoxy)-1,4-phenylenevinylene] (MOPPV)-inorganic PbSe quantum dots. We studied the device performance of the active layer with different mass ratio, and the device performance was best when PbSe wt% was 50% in the MOPPV-PbSe composites, as well as, the short-current density(J sc), open-circuit voltage(V oc ), fill factor(FF) and the power conversion efficiency(η) of the device were 3.661mA/cm2, 0.326V, 23% and 0.277%, respectively. Results indicated that PbSe quantum dots in composite was helped to exciton dissociation, charge transfer, and mobility.