Dye-Sensitized Solar Cell (DSSC) is one of the equipment to convert sunlight into electricity. DSSC consists of anode electrode, titanium oxide () thin film, sensitizer dye, electrolyte and cathode electrode (CE). In general, platinum (Pt) is usually used for CE. This paper studied the fabrication of CE using carbon nanotube (CNT) and CNT mixed with Poly (diallyl dimethylammonium chloride) (PDDA) (CNT/PDDA) as the substitution for Pt electrode. For the fabrication process, Electrophoresis Deposition (EPD) method was employed. CNT electrode was dried at room temperature at 25 o C or annealed at 400 o C for 1 hour, and CNT/PDDA CE was dried at room temperature at 25 o C. The thickness of CE we fabricated was around 15. We adapted MK2 dye which was an organic dye for DSSC. Experimental results showed that the conversion efficiency of the DSSC in the case of CNT/PDDA CE (4.12%) was higher than that of the case of dried CNT electrode (2.78%) and annealed CNT electrode (3.49%) under the 1 sun illumination (100 ⁄). From this experiment results, PDDA has improved CE ability. In addition, CNT/PDDA CE do not need annealing process, so enabling flexible DSSC.
A quasi-solid electrolyte dye-sensitized solar cell (QSDSSC) was fabricated, which used an environment-friendly organic MK2 dye. The quasi-solid electrolyte was fabricated based on I -/I3redox couple and polymethylmethacrylate (PMMA) polymer. Ozone treatment technique has been utilized to clean and improve the hydrophilicity of TiO � thin films, as a result, its dye-adsorption capacity was enhanced. Experimental results with a solar simulator showed that 40 % improvement of the conversion efficiency was obtained with the QSDSSCs fabricated with the photoanodes undergone the ozone treatment compared with the QSDSSCs fabricated with the photoanodes without the ozone treatment. Furthermore, we also conducted a stability test on the QSDSSCs fabricated with the ozone-treated photoanodes to study the stability of the organic MK2 dye and the PMMA-based gel electrolyte.
March 2017 and was admitted to a postgraduate course at same University on April 2017. He also belongs to an electronics system course of Department of Science and Engineering. He is now in the first year. He is making a study of DSSC by using electrophoresis deposition in the graduate course.
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