Journal article

Poly(3-hexylthiophene) coated graphene oxide for improved performance of bulk heterojunction polymer solar cells

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

Organic Electronics | Elsevier | Published : 2017

Abstract

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.

Grants

Awarded by National Natural Science Foundation of China


Awarded by Fundamental Research Funds of Shandong University


Funding Acknowledgements

This work was supported by the National Natural Science Foundation of China (No. 11574181, 61631166001); the Fundamental Research Funds of Shandong University (2014JC047); Open Research Fund of State Key Laboratory Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences; and the "National Young 1000 Talents" Program of China. Support from the University of Melbourne International Research and Research Training Fund (IRRTF) is acknowledged. The authors would like to thank the Shanghai Synchrotron Radiation Facility (beamline BL16B1) for providing the beam time for GIXS measurements.