The Effect of Graphite Concentration in TiO2 Semiconductors on Efficiency of Dye Sensitized Solar Cells (DSSC) Using Dye Melastoma malabathricum L Fruit Extract

Diah  Riski  Gusti; Diah  Mastutik; Intan Lestari; Yuliana  Walidatur Rofiah

doi:10.24036/eksakta/vol22-iss1/258

EKSAKTA: Berkala Ilmiah Bidang MIPA

Open Access

The Effect of Graphite Concentration in TiO2 Semiconductors on Efficiency of Dye Sensitized Solar Cells (DSSC) Using Dye Melastoma malabathricum L Fruit Extract

Diah Riski Gusti ¹

, Diah Mastutik ¹

, Intan Lestari ¹

, Yuliana Walidatur Rofiah ¹

¹ Department of Chemistry, Faculty of Science and Technology, Universitas Jambi, Indonesia

Published 2021-03-27

Vol. 22 No. 1 (2021) PAGES 10-17

DOI 10.24036/eksakta/vol22-iss1/258

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Abstract

The effect of graphite mass in TiO₂ semiconductors on the efficiency of Dye-Sensitized Solar Cell (DSSC) based on dye extract of Melastoma malabathricum has been investigated. This study aims to determine the effect of mass variations of graphite-TiO₂ on the efficiency of DSSC and bandgap produced in the manufacture of DSSC. The mass variation of graphite added in TiO₂ semiconductors is 10%, 12%, 14%, and 16% of the mass of TiO₂. The result shows the maximum wavelength (Î»max) for anthocyanin at 544 nm with an absorbance of 5.7 Ã. The calculation results obtained by the optimal bandgap value in the variation of graphite mass 14% is 3.15 eV. The results of characterization using XRD obtained tetragonal TiO₂ crystal structure with a particle size of 49.8 nm. The DSSC test results obtained optimal results found in mass variations of 14% graphite with a current strength of 140,001 Î¼A, a voltage of 1446.9 mV, and DSSC efficiency of 0.2026%.

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