Ag Interlayered Transparent Conducting Electrode for Photovoltaic Cells

Abstract

We fabricated the organic photovoltaic (OPV) cells on the transparent and low resistive multilayer electrode of a few nm Ag layer embedded Al doped zinc oxide film (AZO/Ag/AZO) on a glass. AZO and Ag consisting of the continuous multilayer were fabricated using rf magnetron at room temperature successively. AZO (45 nm)/Ag (11 nm)/AZO (45 nm) electrode shows an electrical resistivity of 6.56 x 10(-5) Omega cm, optical transmittance of 89.3% at 550 nm and figure of merit (FOM) value of 4.94 x 10(-2) Omega(-1). An inverted structure OPV was fabricated on AZO/Ag/AZO transparent electrode in which TiOx and PEDOT:PSS were used as an electron transport and hole transport layer respectively. The OPVs showed power conversion efficiency and fill factor as high as 2.07%, 0.51 respectively. (C) 2012 The Japan Society of Applied Physics