Solution-Processable High-Quality Graphene for Organic Solar Cells.

The unique optical and electronic properties of graphene open up new opportunities for optoelectronics. This work reports the use of solution-processed high-quality graphene as transparent conductive electrode in an organic solar cell using an electrochemical approach. The fabricated thieno[3,4-b]thiophene/benzodithiophene:phenyl-C71 -butyric acid methyl ester (PTB7:PCB71 M) bulk heterojunction organic solar cell based on the exfoliated graphene (EG) anode exhibits a power conversion efficiency of 4.23%, making EG promising for next-generation flexible optoelectronic devices.