Inexpensive solar cell using TiO₂/coffee composite as photon absorbing material

Abstract

Solar cell using TiO2/coffee composite as photon absorbing material has been successfully fabricated. A suspension of TiO2/coffee was dropped on Fluorine Tin Oxide substrate which was previously heated on a hotplate with temperature of 100 °C. The fraction of coffee was varied from 10, 20, 30, 40, and 50 %, compared to the mass of TiO2. PVA-LiOH electrolyte polymer was functionalized as the hole transport medium. The highest efficiency of 0.76 % was achieved with 40% of coffee fraction. The solar cell is promising to be developed in the future due to the easy method and cheap materials used.

The effect of TiO2 photocatalyst towards methylene blue degradation using simple dip coating

“…Among these materials, TiO2 is greatly recommended for photocatalyst utilizations due to beneficial properties, such as photostability, high reduction-oxidation performance, high chemical stability, no secondary product (benign environmentally), low cost, and remains stable after a reusable photocatalytic application [7]. In addition, the technical anatase TiO2 is also commonly used as photon absorbing material in solar cells [18,19].…”