Sodium chloride methanol solution spin-coating process for bulk-heterojunction polymer solar cells
Liu Tong-Fang1, Hu Yu-Feng1, †, 
, Deng Zhen-Bo1, ‡, , Li Xiong2, Zhu Li-Jie1, Wang Yue1, Lv Long-Feng1, Wang Tie-Ning1, Lou Zhi-Dong1, Hou Yan-Bing1, Teng Feng1
, Deng Zhen-Bo1, ‡, , Li Xiong2, Zhu Li-Jie1, Wang Yue1, Lv Long-Feng1, Wang Tie-Ning1, Lou Zhi-Dong1, Hou Yan-Bing1, Teng Feng1 AFM (1 μm × 1 μm) images of P3HT:PC61BM blend films without treatment (a), with methanol (b), with methanol-processed NaCl (c). The root mean square roughness (
