Karakteristik Lapisan TiO2 Metode Spray dalam Dye-Sensitized Solar Cell

Abstract

Characteristic of TiO2 layers which was produced by spray method using airbrush equipment in the Dye-Sensitized Solar Cell (DSSC) were investigated from TiO2 surfaces morphology and I-V characteristics of DSSC. Spray application rate varied into 20, 40, and 60 times. Annealing temperature variation of TiO2 layers for each spray amount variation were 300C, 400C, and 500C, respectively. Dye was extracted from Spirulina sp chlorophyll which was used as sensitizer on the DSSC structures. The I-V characteristics of DSSC indicated that spray and temperature variation of TiO2 layers form diode characteristic curves. Generally, annealing temperature of 400C had Voc value higher than annealing temperature of 300C and 500C. The magnitude of Voc value was closely related with TiO2 high absorption to dyes. Furthermore, grain agglomeration models of TiO2 at 400C estimated that electrons diffused in TiO2 and then succeeded to attain the work electrode more than agglomeration models at 300C and 500C. Keyword : TiO2, DSSC, spray, I-V characteristics, Voc