13:15 〜 13:30
▲ [15p-A402-1] The effect of mixed- solvent and Br doping ratio of wide band gap perovskite layers for perovskite solar cells
キーワード：Perovskite, Br doping, Solvent ratio
Photovoltaic cells could boost the efficiency from ~20% toward 30% when used in tandem architectures with silicon photovoltaic cells. An optimum optical band gap of top cell is ~1.71 electron volts (eV). Here we present the study of different perovskite precursor solvent (DMSO/GBL) ratio and different amount of Br doping on perovskite material, [HC(NH2)2]0.8Cs0.2Pb(I1-xBrx)3, with desire band gap and efficiency combination. The perovskite photovoltaic cells with 1.71eV band gap we fabricated that reached open-circuit voltages of 1.17 volts and power conversion efficiency of 14.2%