Production and Characterization of P3HT:PCBM Photoactive Layer Based Inverted Polymer Solar Cells

Abstract

In this study, inverted polymer solar cells(IPSC) were produced by using transparent metal oxides of SnO2, TiO2 ve ZnO thin films. The solar cell structures of Glass/FTO/SnO2/Polymer/MoO3/Ag, Glass/FTO/TiO2/Polymer/MoO3/Ag and Glass/FTO/ZnO/Polymer/MoO3/Ag were produced by using Glass/fluorine doped tin oxide (Glass/FTO) substrates and P3HT:PCBM polymer photoactive layer. A sputterring system was used to coat the transparent metal oxides and a spin coating system was used to deposit polymer layer. The surface morphologies of SnO2, TiO2, ZnO and P3HT:PCBM polymer layers analyzed by Atomic Force Microscope (AFM). Moreover, the drying process of the polymer layer over time after coating was pictured. The effects of transparent metal oxides as electron transport layer on photovoltaic performance of produced inverted polymer solar cells (IPSC) under AM 1.5 solar illumination was examined and the power conversion efficiencies (PCE) of cells wıth SnO2, TiO2 and ZnO layers were measured as 1.62%, 2.78% and 3.32%, respectively.

Keywords

• inverted polymer solar cells (ipsc)
• metal oxides
• p3ht:pcbm