Tandem Organic Solar Cells with 18.7% Efficiency Enabled by Suppressing the Charge Recombination in Front Sub‐Cell

• Published in: Advanced functional materials Vol. 31; no. 29
• Main Authors: Liu, Gongchu, Xia, Ruoxi, Huang, Qiri, Zhang, Kai, Hu, Zhicheng, Jia, Tao, Liu, Xiang, Yip, Hin‐Lap, Huang, Fei
• Format: Journal Article
• Language: English
• Published: Hoboken Wiley Subscription Services, Inc 01.07.2021
• Subjects: Absorptivity; charge recombination; Energy conversion efficiency; fill factor; Fullerenes; high efficiency; interconnecting layers; Materials science; Photoelectric effect; Photoelectric emission; Photovoltaic cells; Solar cells; tandem devices; Thickness; Zinc oxide

The maximum photocurrent in tandem organic solar cells (TOSCs) is often obtained by increasing the thicknesses of sub‐cells, which leads to recombination enhancement of such devices and compromises their power conversion efficiency (PCE). In this work, an efficient interconnecting layer (ICL) is dev...