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High Efficiency Near-Infrared and Semitransparent Non-Fullerene Acceptor Organic Photovoltaic Cells
Journal of the American Chemical Society ( IF 15.0 ) Pub Date : 2017-11-16 , DOI: 10.1021/jacs.7b11278
Yongxi Li 1 , Jiu-Dong Lin 2 , Xiaozhou Che 1 , Yue Qu 1 , Feng Liu 3 , Liang-Sheng Liao 2 , Stephen R. Forrest 1
Affiliation  

The absence of near-infrared (NIR) solar cells with high open circuit voltage (Voc) and external quantum efficiency (EQE) has impeded progress toward achieving organic photovoltaic (OPV) power conversion efficiency PCE > 15%. Here we report a small energy gap (1.3 eV), chlorinated nonfullerene acceptor-based solar cell with PCE = 11.2 ± 0.4%, short circuit current of 22.5 ± 0.6 mA cm-2, Voc = 0.70 ± 0.01 V and fill factor of 0.71 ± 0.02, which is the highest performance reported to date for NIR single junction OPVs. Importantly, the EQE of this NIR solar cell reaches 75%, between 650 and 850 nm while leaving a transparency window between 400 and 600 nm. The semitransparent OPV using an ultrathin (10 nm) Ag cathode shows PCE = 7.1 ± 0.1%, with an average visible transmittance of 43 ± 2%, Commission d'Eclairage chromaticity coordinates of (0.29, 0.32) and a color rendering index of 91 for simulated AM1.5 illumination transmitted through the cell.

中文翻译:

高效近红外半透明非富勒烯受体有机光伏电池

缺乏具有高开路电压 (Voc) 和外量子效率 (EQE) 的近红外 (NIR) 太阳能电池阻碍了实现有机光伏 (OPV) 功率转换效率 PCE > 15% 的进展。在这里,我们报告了小能隙 (1.3 eV)、基于氯化非富勒烯受体的太阳能电池,PCE = 11.2 ± 0.4%,短路电流为 22.5 ± 0.6 mA cm-2,Voc = 0.70 ± 0.01 V,填充因子为 0.71 ± 0.02,这是迄今为止报告的 NIR 单结 OPV 的最高性能。重要的是,该 NIR 太阳能电池的 EQE 达到 75%,在 650 到 850 nm 之间,同时在 400 到 600 nm 之间留下透明窗口。使用超薄 (10 nm) Ag 阴极的半透明 OPV 显示 PCE = 7.1 ± 0.1%,平均可见光透射率为 43 ± 2%,Commission d'Eclairage 色度坐标为 (0.
更新日期:2017-11-16
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