The Effect Of Thermal Annealing On The Efficiency Of Semi-Transparent Organic Solar Cells

Solar cells provide an alternative and environmentally friendly source of energy from the sun. In this project, we fabricated organic solar cells and characterized their conduction under a simulated solar light source. The organic cells have an active region composed of electron-donor poly(3-hexylthiophene) (P3HT) and electron acceptor penyl-C61-butyric acid methyl ester (PCBM) materials to form a pn heterojunction. In our study, we analyzed the effect of annealing P3HT:PCBM polymeric blends on cell efficiency while maintaining the substrates under ambient atmosphere. We investigated the effect of annealing on the solar cell efficiency by measuring their current-voltage characteristics given these conditions, and found a direct correlation between efficiency and annealing temperature