A “σ-Hole”-Containing Volatile Solid Additive Enabling 16.5% Efficiency Organic Solar Cells

• Published in: iScience Vol. 23; no. 3; p. 100965
• Main Authors: Fu, Jiehao, Chen, Shanshan, Yang, Ke, Jung, Sungwoo, Lv, Jie, Lan, Linkai, Chen, Haiyan, Hu, Dingqin, Yang, Qianguang, Duan, Tainan, Kan, Zhipeng, Yang, Changduk, Sun, Kuan, Lu, Shirong, Xiao, Zeyun, Li, Yongfang
• Format: Journal Article
• Language: English
• Published: United States Elsevier Inc 27.03.2020; Elsevier
• Subjects: Energy Materials; Organic Chemistry; Supramolecular Chemistry; Energy Materials; Supramolecular Chemistry; Organic Chemistry

Here we introduce a σ-hole-containing volatile solid additive, 1, 4-diiodotetrafluorobenzene (A3), in PM6:Y6-based OSCs. Aside from the appropriate volatility of A3 additive, the synergetic halogen interactions between A3 and photoactive matrix contribute to more condensed and ordered molecular arra...