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Renewable energy is rapidly gaining importance as an energy resource to help aid the national energy depletion crisis of fossil fuel and coal. One of the most potential renewable energy sources in Malaysia is hydropower followed by solar energy. This paper presents the fabrication of Dye Sensitized Solar Cell (DSSC) using organic dyes from dragon fruit and chlorophyll which is extracted from spinach. The fabrication of DSSC uses the Dr.blade method. Result shows that the efficiency by using dragon fruit as sensitizer at 40µm TiO2 Thickness is 6.45%, better than the usage of chlorophyll dye which is 4.23% at the same thickness. Result also shows that at 80µm by using the dyes from chlorophyll extract has higher solar cell efficiency compare to dragon fruit. This shows that both the chlorophyll extract and dragon fruit shows potential in the development of a feasible working organic dye.

DSSC is in the third generation of PV technology which employ easily available raw material with low cost manufacturing methods. Dye- Sensitized Solar Cell (DSSC) consist of a photo electrochemical cell of oxide semiconductor layer, dye molecules, electrolyte and counter electrode. This paper presents the comparison of the thickness of the TiO2 using Rutile-Anatase composition at 1:4 ratioto the electrical performance of the DSSC. The Dr. Blade method was employed to the fabrication of the DSSC with a reference dyes and platinum sputtered technique counter electrode. The result shows that solar cell with an efficiency of 0.36 % of was produced from electrode film thickness of 10 µm. Further increase in the thickness shows decreased of the efficiency, especially the short circuit current. From the experiment conducted, it shows the 10 µm is suitable size to fabricate the DSSC using the RA-TiO2 but further investigation is needed to verify the electron transfer efficiency and recombination rate in thicker/thinner films.

Dye-sensitized solar cell (DSSC) is part of the thin film family that consists of a TiO2 electrode coating which acts as a photo electrode, sensitizer from dye molecules soaked in the TiO2 film, electrolyte layer and a counter electrode. This paper focuses on the usage of a sensitizer from the rose flower and will review some of the research conducted on dye sensitizers from other researcher. Rose flower also known as woody perennial of the genus Rosa, within the family Rosaceae is extracted and were used as sensitizer to fabricate dye sensitized solar cell (DSSC). The photoelectrochemical performance of Rose sensitized solar cell shows parameter of open circuit voltage, VOC,short circuit current, (ISC), fill factor (FF), solar cell efficiency (η), and peak absorbance rate as much as 0.13 V, 57.58 µA, 0.58, 0.85% and 3.5 at 550nm respectively. The photoelectrochemical performance of DSSC and the usage of natural sensitizer from Rose flower dye demonstrate good potential to be applied as a sensitizer yet detail investigations are essential in terms of its applicability for long term application.

Solar cell research is an ongoing process to obtain a trade-off between the efficiency to price ratio. In the process to obtain high efficiency at lower cost, the dye sensitized solar cell (DSSC) emerge as the potential candidate. There have been many calls for an alternative method to a solar cell production compared to the current Si-solar cell production. This paper briefly discusses the comparison of using Anatase based titanium dioxide (A-TiO2) at different thickness to the electrical performance of the DSSC. The Dr. Blade method was employed to the fabrication of the DSSC with a reference dyes and platinum deposition technique which acts as a counter electrode. Overall result shows that the 10µm thickness displays improved performance in the solar cell efficiency as compared to other electrode thickness fabricated and tested. The factors that improves the electrical performance based on the electrode thickness have been discussed in the paper.