|
|||||
|
|
Improved catalytic activity of Pt/rGO counter electrode in In2O3-based DSSC |
|
| Authors: | Mahalingam Savisha Abdullah Huda Shaari Sahbudin Muchtar Andanastuti |
| Institution: | 1.Electrical, Electronic, and Systems Engineering, Universiti Kebangsaan Malaysia, Bangi, Malaysia ;2.Photonic Technology Laboratory, Department of Electrical, Electronics and System Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, Bangi, Malaysia ;3.Mechanical and Materials Engineering, Universiti Kebnagsaan Malaysia, Bangi, Malaysia ; |
| Abstract: | A platinum/reduced graphene oxide (Pt/rGO) nanocomposite acting as a counter electrode (CE) was fabricated using a chemical bath deposition method for In2O3-based dye-sensitized solar cell (DSSC) via sol-gel technique. The report analyzes the morphological and electrochemical impedance spectroscopy of the annealing Pt/rGO films at 350, 400, and 450 °C. Micrograph images obtained from field emission scanning electron microscopy demonstrated the annealed films are highly porous. The energy-dispersive X-ray results show that the carbon atoms were homogeneously distributed on the film annealed at 400 °C. A good photovoltaic performance was exhibited with high photocurrent density of 8.1 mA cm?2 and power conversion efficiency (η) of 1.68 % at the Pt/rGO CE annealed at 400 °C. The employed electrochemical impedance spectroscopy analysis quantifies that the Pt/rGO films annealed at 400 °C provide more efficient charge transfer with the lowest effective recombination rate and high electron life time, hence improving the performance of Pt/rGO CE. |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ | |