Hierarchical vertically oriented graphene as a catalytic counter electrode in dye-sensitized solar cells†
Kehan Yu,Zhenhai Wen,Haihui Pu,Ganhua Lu,Zheng Bo,Haejune Kim,Yuanyuan Qian,Erin Andrew,Shun Mao,Junhong Chen
Abstract
Vertically oriented graphene (VG) nanosheets are synthesized for counter electrodes (CEs) of dye-sensitized solar cells (DSSCs). The VG electrode exhibits charge transfer resistance about 1% of the Pt electrode and improves power conversion efficiency of DSSCs from 4.68% (for Pt CEs) to 5.36%.
