Structural and optical properties of ZnO nanostructures electrochemically synthesized on AZO/Ag/AZO-multilayer-film-coated polyethersulfone substrates

• Published in: Journal of the Korean Physical Society Vol. 60; no. 10; pp. 1695 - 1699
• Main Authors: Oh, Dohyun, Yoo, Chan Ho, No, Young Soo, Kim, Su Youn, Kim, Tae Whan, Cho, Woon-Jo, Kim, Jin Young
• Format: Journal Article
• Language: English
• Published: Seoul The Korean Physical Society 01.05.2012; 한국물리학회
• Subjects: Mathematical and Computational Physics; Particle and Nuclear Physics; Physics; Physics and Astronomy; Theoretical; 물리학; Optical property; Structural property; ZnO nanostructures
• ISSN: 0374-4884; 1976-8524
• DOI: 10.3938/jkps.60.1695

Abstact ZnO nanostructures were formed on Al-doped ZnO (AZO)/Ag/AZO-multilayer-film-coated flexible polyethersulfone (PES) substrates at low temperature by using an electrochemical deposition method. The resistivity of the AZO/Ag/AZO multilayer films decreased with increasing thickness of the Ag film. X-ray diffraction patterns for the ZnO nanostructures showed that the crystal structure of the ZnO was hexagonal wurtzite and that the orientation was along the c-axis perpendicular to the substrate. Scanning electron microscopy images showed that the ZnO nanostructures grown at current densities of −1.0 and −1.5 mA/cm 2 were ZnO nanorods with diameters of 150 nm and ZnO nanoflowers with a planar dimension, respectively. Photoluminescence spectra showed that the band-edge emission peak of the ZnO nanostructures dominantly appeared in the ultraviolet region. These results showed that ZnO nanorods and nanoflowers with high quality were synthesized on AZO/Ag/AZO-multilayer-film-coated PES substrates.