Synthesis of TiO2/ZnO photoanodes on FTO conductive glass for photovoltaic applications

Abstract

For oxide semiconductors for application in dye-sensitized solar cells (DSSCs), titanium dioxide conjugated with zinc oxide thin films was synthesized and characterized. The UV (ultraviolet) spectrum characterization showed a peak of absorbance at around 355 nm, with a band gap of 3.25 eV and reflectance around 85%. Such characteristics allowed the fabrication of DSSCs with N719 dye, under simulated light of 100 mW/cm 2 . The highest efficiency of 1.17% was at 5% titanium dioxide and 4 h of dye immersion.

Effects of Lithium Salt on Optical and Structural Properties of ZnO Thin Films

“…The film layers on the glass were thermally treated at 450°C for 30 minutes and then cooled off at room temperature. This same methodology was also applied in [7,24].…”

“…The method must be efficient and cost-effective, creating layers with good crystalline quality, applied in different devices, photocatalysts, gas sensors, solar cells, etc. This work used a simple yet efficient method of synthesis that has been used successfully to deposit TiO2/ZnO and Sn/ZnO thin films applied in solar cells [7,24].…”