Graphene Quantum-Dot-Doped Polypyrrole Counter Electrode for High-Performance Dye-Sensitized Solar Cells
2013; American Chemical Society; Volume: 5; Issue: 6 Linguagem: Inglês
10.1021/am302938a
ISSN1944-8252
AutoresLijia Chen, Chunxian Guo, Qiaoming Zhang, Yanlian Lei, Jiale Xie, Shujing Ee, Guanhong Guai, Qunliang Song, Chang Ming Li,
Tópico(s)Carbon and Quantum Dots Applications
ResumoHerein 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.
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