Fei Zheng, Xiao-Yu Yang, Peng-Qing Bi, Meng-Si Niu, Cheng-Kun Lv, Lin Feng, Wei Qin, Yu-Zhu Wang, Xiao-Tao Hao, Kenneth P. Ghiggino, "Poly(3-hexylthiophene) coated graphene oxide for improved performance of bulk heterojunction polymer solar cells", Organic Electronics vol 44, May 2017, pp 149–158

Absract
An effective method for preparing poly(3-hexylthiophene) (P3HT) coated graphene oxide (GO), (P-GO), based on an ethanol mediated mixing and solvent evaporation method is described. P-GO exhibits good dispersibility in the non-polar solvent o-dichlorobenzene (DCB) allowing the preparation of polymer blend composites. P-GO was doped into P3HT: PCBM blends by solution mixing and shown to facilitate phase separation of P3HT and PCBM in P3HT: PCBM blend films to achieve a more optimum morphology for polymer photovoltaic cells. Bulk heterojunction P3HT: PCBM solar cells exhibit ∼18% power conversion efficiency enhancement in the presence of P-GO.