Characterization of dye-sensitized solar cell (DSSC) with acid treatment by HNO3 in mangosteen peel dye

Abstract

The influences of acid treatment of dye sensitizer using HNO3 on the characteristics of DSSC were investigated. The acid treatment using HNO3 improved morphology of TiO2, increased the amount of adsorbed dye molecules on TiO2, and diffusion of redox electrolyte became easier. The values of Isc and Voc of DSSC increased with the addition of HNO3 on dye sensitizers. They were caused by the charge collected by adsorption of anions on the surface of TiO2. Without the addition of HNO3 the efficiency produced is 0.141%. and with the addition of HNO3 into the dye solution increased the efficiency by 0.201%