Copper oxide-modified graphene anode and its application in organic photovoltaic cells Wang, Min ; Yu, Hongtao ; Ma, Xiaoqian ; Yao, Yao ; Wang, Liang ; Liu, Lihui ; Cao, Kun ; Liu, Shuli ; Dong, Chen ; Zhao, Baomin ; Song, Chunyuan ; Chen, Shufen ; Huang, Wei Abstract Publication: Optics Express Pub Date: September 2018 DOI: 10.1364/OE.26.00A769 Bibcode: 2018OExpr..26A.769W