Exploring alkylthiol additives in PBDB-T:ITIC blended active layers for solar cell applications

Li Xiang¹, He Zhiqun^{1, †}, Sun Mengjie¹, Zhang Huimin¹, Guo Zebang¹, Xu Yajun¹, Li Han¹, Liang Chunjun¹, Jing Xiping²

(a)–(d) AFM height images and (e)–(h) phase images of PBDB-T:ITIC blend films; (a) and (e) without additive, and with additive of: (b) and (f) 1% PDT, (c) and (g) 0.5% BDT, and (d) and (h) 0.5% ODT.