[16p-P6-1~32] 12.5 Organic solar cells

▼ [16p-P6-17] Efficient Planar Perovskite Solar Cells Using Solution-Processed Amorphous WOx/Fullerene C₆₀ as Electron Extracting Layers

〇(DC)Vincent Obiozo Eze¹, Yoshiyuki Seike¹, Tatsuo Mori¹ (1.Aichi Inst. of Technol.)

Keywords:Perovskite Solar Cells, Low Temperature, Electron Selective Layers

Amorphous tungsten oxide (WOx) has been successfully employed as electron extracting layer (EEL) in PSCs. However, the WOx device suffers from high charge recombination at the perovskite/WOx interface, resulting to low open circuit voltage (Voc) and fill factor (FF). Here, we report that WOx/fullerene C₆₀ can work cooperatively to further enhance the performance of PSCs. When a WOx/C₆₀ was used as EEL for the device, a PCE of 16.0% was achieved, while the pristine WOx achieved a PCE of 13.3% under reversed voltage scanning.