Highly conductive and transparent carbon nanotube-based electrodes for ultrathin and stretchable organic solar cells

Fan Qingxia^{1, 3}, Zhang Qiang^{1, 3}, Zhou Wenbin¹, Yang Feng^{1, 3}, Zhang Nan¹, Xiao Shiqi^{1, 3}, Gu Xiaogang^{1, 3}, Xiao Zhuojian^{1, 3}, Chen Huiliang^{1, 3}, Wang Yanchun^{1, 2, 3}, Liu Huaping^{1, 2, 3}, Zhou Weiya^{1, 2, 3, †}

(color online) The AFM images of the CNT film treated with (a) 0-mM, (b) 2-mM, (c) 5-mM, (d) 10-mM, (e) 30-mM, and (f) 50-mM chloroauric acid.