Enhancing J(sc) of solar cells consisting of mixed metal perovskite, MASn(0.5)Pb(0.5)I(3) (SnPb PVK), is reported. The SnPb PVK was prepared from PbI2/SnI2 mixture or SnI2(DMSO)(2)/PbI2(DMSO)(2) mixture, where these PVK are abbreviated as SnPb-A PVK and SnPb-B PVK, respectively. Urbach energy's sharpness factor (sigma) for SnPb-B PVK was 1.5 which was higher than 0.5 for SnPb-A PVK, suggesting that the SnPb-B PVK has less crystal disordering than the SnPb-A PVK. The Jsc of the SnPb-B PVK cell was improved to 30 mA/cm(2), compared to 20 mA/cm(2) for SnPb-A PVK cell. The carrier dynamics is discussed by transient spectroscopy studies.