Institute for Clean Energy & Advanced Materials, Southwest University, Chongqing 400715, PR China.
ACS Appl Mater Interfaces. 2013 Mar;5(6):2047-52. doi: 10.1021/am302938a. Epub 2013 Mar 11.
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.
本文探索了石墨烯量子点（GQD）——一种横向尺寸小于 100nm 的石墨烯材料——将其掺杂到 F 掺杂氧化锡玻璃上的 PPy 中，作为高性能染料敏化太阳能电池（DSSCs）的高效对电极。与密集结构的纯 PPy 相比，GQDs 掺杂的 PPy 薄膜具有多孔结构，并且对 I3(-)/I(-)氧化还原反应表现出比后者更高的催化电流密度和更低的电荷转移电阻。掺杂 10%GQD 的 PPy 实现了 DSSCs 的最高功率转换效率（5.27%），与基于 Pt 对电极的 DSSCs 相当。这项工作为 DSSCs 提供了一种廉价的铂替代方案。
