title: Graphene quantum-dot-doped polypyrrole counter electrode for high-performance dye-sensitized solar cells.
abstract: Herein graphene quantum dot (GQD), a graphene material with lateral dimension less than 100 nm, is explored to dope PPy on F-doped tin oxide glass as an efficient counter electrode for high-performance dye-sensitized solar cells (DSSCs). The GQDs-doped PPy film has a porous structure in comparison to the densely structured plain PPy, and displays higher catalytic current density and lower charge transfer resistance than the latter toward I3(-)/I(-) redox reaction. The highest power conversion efficiency (5.27%) for DSSCs is achieved with PPy doped with10% GQDs, which is comparable to that of Pt counter electrode-based DSSCs. This work provides an inexpensive alternative to replace platinum for DSSCs.
authors: Institute for Clean Energy & Advanced Materials, Southwest University, Chongqing 400715, PR China.
authors: Lijia
authors: L
authors: Chen
authors: Chun Xian
authors: CX
authors: Guo
authors: Qiaoming
authors: Q
authors: Zhang
authors: Yanlian
authors: Y
authors: Lei
authors: Jiale
authors: J
authors: Xie
authors: Shujing
authors: S
authors: Ee
authors: Guanhong
authors: G
authors: Guai
authors: Qunliang
authors: Q
authors: Song
authors: Chang Ming
authors: CM
authors: Li
mesh_terms: D004396:Coloring Agents / Q000737:chemistry*; D004566:Electrodes; D006108:Graphite / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry*; D011758:Pyrroles / Q000737:chemistry*; D045663:Quantum Dots; D012993:Solar Energy
chemical_list: D004396:Coloring Agents; D011108:Polymers; D011758:Pyrroles; C067635:polypyrrole; D006108:Graphite