title: MgxZn1-xO/Ag/MgxZn1-xO Multilayers As High-Performance Transparent Conductive Electrodes.
abstract: We report on the optical and electrical properties of MgxZn1-xO/Ag/MgxZn1-xO transparent conductive electrodes. The transmittance and sheet resistance of MgxZn1-xO/Ag/MgxZn1-xO multilayers deposited at room temperature were strongly dependent on the thickness and surface morphology of Ag layer. The optical absorption edge of MgxZn1-xO/Ag/MgxZn1-xO showed a blue shift with increasing Mg composition due to the increased band gap of MgxZn1-xO. The Haack figure of merit value of Mg0.28Zn0.72O/Ag/Mg0.28Zn0.72O with a 14 nm-thick Ag layer, which has a sheet resistance of 6.36 Ω/sq and an average transmittance of 89.2% at wavelengths in the range from 350 to 780 nm, was 69% higher than that of a ZnO/Ag/ZnO multilayer electrode. These results indicate that MgxZn1-xO/Ag/MgxZn1-xO multilayers, which also show low surface roughness, can be used as highly conductive transparent electrodes in various optoelectronic devices operating over a wide wavelength region.
authors.affiliation: School of Materials Science and Engineering, Gwangju Institute of Science and Technology , Gwangju 500-712, Republic of Korea.
authors.forename: Hyo-Ju
authors.initials: HJ
authors.lastname: Lee
authors.affiliation: School of Materials Science and Engineering, Gwangju Institute of Science and Technology , Gwangju 500-712, Republic of Korea.
authors.forename: Jang-Won
authors.initials: JW
authors.lastname: Kang
authors.affiliation: Department of Nanobio Materials and Electronics, Gwangju Institute of Science and Technology , Gwangju 500-712, Republic of Korea.
authors.forename: Sang-Hyun
authors.initials: SH
authors.lastname: Hong
authors.affiliation: School of Materials Science and Engineering, Gwangju Institute of Science and Technology , Gwangju 500-712, Republic of Korea.
authors.forename: Sun-Hye
authors.initials: SH
authors.lastname: Song
authors.affiliation: School of Materials Science and Engineering, Gwangju Institute of Science and Technology , Gwangju 500-712, Republic of Korea.|Department of Nanobio Materials and Electronics, Gwangju Institute of Science and Technology , Gwangju 500-712, Republic of Korea.
authors.forename: Seong-Ju
authors.initials: SJ
authors.lastname: Park
keywords: MgZnO; band gap engineering; multilayers; surface roughness; transparent electrode