The 67th JSAP Spring Meeting 2020

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12 Organic Molecules and Bioelectronics » 12.5 Organic solar cells

[15p-A402-1~11] 12.5 Organic solar cells

Sun. Mar 15, 2020 1:15 PM - 4:15 PM A402 (6-402)

Masashi Ikegami(Toin Univ. of Yokohama), Atsushi Kogo(AIST)

1:15 PM - 1:30 PM

▲ [15p-A402-1] The effect of mixed- solvent and Br doping ratio of wide band gap perovskite layers for perovskite solar cells

〇(B)Huang ChengGang1, KunMu Lee1 (1.Chang Gung Univ.)

Keywords: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%