Evaluasi Performa Dye Sensitized Solar Cell dengan Penambahan Gum Xhantan pada Larutan Elektrolit

Abstract

Ramadhani, I. S., Tamrin, T., & Pratama, F. (2023). Evaluation of electrical performance of dye sensitized solar cell with the addition of xhantan gum in electrolyte. In: Herlinda S et al. (Eds.), Prosiding Seminar Nasional Lahan Suboptimal ke-11 Tahun 2023, Palembang 21 Oktober 2023. (pp. 88-103).  Palembang: Penerbit & Percetakan Universitas Sriwijaya (UNSRI).

Dye Sensitized Solar Cell is a set of photoelectrochemical-based solar cells that can convert solar energy into electrical energy by utilizing plant-derived dyes as a sensitizer. The factor that can affect the performance of a DSSC is the electrolyte solution. Electrolyte solution with the addition of a thickening agent can overcome the evaporation of the electrolyte solution. The electrolyte solution used in this study was iodine with a concentration of 0.1 N and added thickening agents, namely Xhantan gum. This study aimed to determine the performance of DSSC with water hyacinth leaf extract as a light sensitizer with the addition of Xhantan gum. This study consisted of three stages, namely DSSC structure, arrangement and assembly of DSSC layers, and measurement of DSSC. The TCO glass used has a resistance between 0.9 Ω to 15.1 Ω DSSC. The concentration of thickening agent in the electrolyte solution were 1%, 3%, 5% and a control sample without thickening agent. The parameters observed in this study were calculation of chlorophyll content with absorbance measured at 649 nm and 665 nm, current and voltage characteristics, power, fill factor, and DSSC efficiency. The best DSSC performance using water hyacinth dye with the addition of a thickening agent of 3% Xhantan gum electrolyte solution. The electrical characteristics generated in the sample were Isc: 0.0138 mA, Voc: 0.743 mV, Imax: 0.0103 mA, Vmax: 0.519 mV, Pmax: 0.00535 mW, FF: 0.5214, and an efficiency of 0, 0185%. The chlorophyll level produced by chlorophyll dye is 36.3713 mg/L.  Chlorophyll is a dye with the ability to absorb light and donate electrons. The electrolyte solution in DSSC has an effect on increasing DSSC performance at a concentration of 3%, but at a concentration of 5% DSSC performance decreases due to the low current originating from a large charge concentration, especially in an electrolyte solution that is too thick.