Abstract
The aim of this paper is to demonstrate the influence of the TiO2 with different sintered time regarding the performance of photovoltaic characteristics of DSSCs. A layer of TiO2 with a thickness of ~8-10 μm and an area of 0.25 cm2 was prepared by depositing TiO2 nanoparticles paste onto a fluorine-doped tin oxide (FTO) sbustrate by doctor blade technique, followed by sinterring at 450°C with 4 differennt sintering times: 10 min, 20 min, 30 min, and 40 min. The Pt solution was dripped on FTO substrate works as counter electrode. SEM, XRD and I-V curve were conducted for the material analysis. The photovoltaic characteristics were measured under AM 1.5 sunlight simulator. The results reveal that the different sintered time of TiO2 working electrode did affect the photovoltaic conversion efficiency. In conclusion, TiO2 sintered for 30 min yields the highest power conversion efficiency of 6.273%.
Highlights
The needs for alternative energy has become a great concern due to the growing energy demand
The result indicates that the adhesion of TiO2 on fluorine-doped tin oxide (FTO) does not change with different sintered times
The diffraction peak did not increase significantly as sintered time increased. It results in the best anatase phase crystals and diffraction peak under 20 and 30 min of sintered time
Summary
The needs for alternative energy has become a great concern due to the growing energy demand. Solar energy resource is a rich and clean renewable energy and has attracted great attention of researchers in the world. [1,2] Among all of these materials, dye-sensitized solar cells ( DSSCs) is one of the most prospective materials for photovoltaic solar cell devices [1,3]. A conventional DSSCs consists three main components: a mesoporous nanocrystalline TiO2 anode which sensitized with light-absorbing dye molecules, a counter electrode (CE) which collects electronsand catalyze the redox couple regeneration, and a liquid electrolyte which comprising an iodide/triiodide (I-/I3-) redox couple between two electrodes[3,4]
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