Efficiency Increase by Insertion of Electrodeposited CuSCN Layer into ITO/Organic Solid Interface in Bulk Hetero-junction Solar Cells Consisting of Polythiophene and Fullerene

When an electrodeposited CuSCN thin film was inserted into the interface of ITO/P3HT:PCBM blended solid film (P3HT: regioregular poly(3-hexylthiophene), PCBM: soluble [6,6]phenyl C61 buttyric acid methyl ester) in ITO/P3HT:PCBM/ Al sandwich-type solar cells, the cell performance was remarkably improved, resulting in 2.5% of energy conversion yield under the irradiation of AM 1.5-100 mW/cm(2) simulated sunlight.