Tuning the alignment of pentacene on copper substrate by annealing-assistant surface functionalization
Cao Qiao-Jun1, Wen Shuang1, Xie Hai-Peng2, Shi Bi-Yun1, Wang Qun1, Lu Cong-Rong1, Gao Yongli3, Dou Wei-Dong1, ‡
       

Film morphology and molecular orientation of pentacene on anneal-treated LPC and HPC substrates: 2D (a) and 3D (b) AFM images of pentacene on LPC substrate; 2D (c) and 3D (d) AFM images of pentacene on HPC substrate; (e) Raman spectrum of pentacene film on LPC and (f) HPC substrates. The nominal thickness of pentacene film for all cases is 1.0 nm.