The influence of the composition of P3HT:TiO2 on the characteristics of hybrid polymer solar cell

Abstract

In this paper, a study on the fabrication of hybrid polymer solar cells based on organic semiconductor materials P3HT (poly-3-hexylthiophene) and inorganic semiconductor materials TiO2 (titanium dioxide) has been carried out. The study is focused on the influence of the composition of P3HT and TiO2 on the optical and electrical characteristics of hybrid polymer solar cells. The composition of P3HT and TiO2 are varied with ratios of (1:1), (2:1), and (1:2), respectively, in a concentration of 10 mg/ml. The optical characterization using a UV-Vis spectrometer shows that the higher absorption of the active layer results from the (1:1) ratio of P3HT:TiO2. Based on the electrical characterization, using solar simulator on hybrid polymer solar cells, can be concluded that a mass ratio of P3HT:TiO2 (1:1) gives the best performance, with an open-circuit voltage of 0.2437 volts, a short-circuit current of 0.0029 milliamperes, a maximum power of 0.0002 milliwatts, and a power conversion efficiency of 00006%, at the light intensity of 500 W/m2.