Large-area, smooth, transparent and conductive graphene films were produced by a spin-coating method using graphene solutions. Bulk heterojunction polymer organic photovoltaic devices using these pure graphene films as a transparent anode were fabricated and studied. A direct pure graphene film electrode ensured that the device fabrication cost remained low and the processing was simple. The photovoltaic device displayed a power-conversion efficiency of 0.13.
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Key Laboratory of Functional Polymer Materials, Center for Nanoscale Science & Technology, Institute of Polymer Chemistry,College of Chemistry, Nanfeai University, Tianjin 300071, China;
