Author/Authors :
Guan Hong Guai a، نويسنده , , b، نويسنده , , Qun Liang Song a، نويسنده , , c، نويسنده , , d، نويسنده , , Chun-Xian Guo، نويسنده , , c، نويسنده , , d، نويسنده , , Zhi Song Lu c، نويسنده , , Tao Chen a، نويسنده , ,
Chee Mang Ng b، نويسنده , , Chang Ming Li a، نويسنده , , c، نويسنده , , d، نويسنده , , ?، نويسنده ,
Abstract :
A graphene-PtnITO (ITO-PG) counter electrode is fabricated by electrochemical deposition of a porous graphene film on a lowloaded
PtnITO electrode. Compared to both plain graphene and Pt films, the graphene-coated Pt composite film provides large and superior
conductive interface for significant improvement of Pt utilization efficiency and charge transfer, which in turn leads to higher power
conversion efficiency of the dye-sensitized solar cell (DSSC). As compared to conventional Pt-coated counter electrode, the Pt loading of
ITO-PG electrode can be reduced by more than 60% to 1.9 lg cm 2 while achieving even better performance. The performance enhancement
mechanism is proposed. This work renders an economical manufacturing process to fabricate high performance DSSC for potential
commercial production.
2012 Elsevier Ltd. All rights reserved
Keywords :
Platinum , Counter electrode , graphene , Charge transfer , Dye-sensitized solar cell
