Growth of hexagonal prism ZnO nanorods on Zn substrates by hydrothermal method and their photoluminescence

• Main Authors: Ekthammathat N., Thongtem T., Phuruangrat A., Thongtem S.
• Format: Conference or Workshop Item
• Language: English
• Published: 2014
• Online Access: http://www.scopus.com/inward/record.url?eid=2-s2.0-84875754166&partnerID=40&md5=40831aeecc765646bb974a443d5290de; http://cmuir.cmu.ac.th/handle/6653943832/6901
• Institution: Chiang Mai University

Hexagonal prism ZnO nanorods were successfully grown on Zn substrates by the 120 °C and 24 h hydrothermal reaction of the solutions with pH of 9-12. Results from XRD, SEM, TEM, SAED and HRTEM showed that the as-synthesized products were wurtzite ZnO with the shape of hexagonal prism nanorods grown along the [0 0 1] direction with smooth prismatic side planes. The PL spectra showed strong emission band at 543 nm in the green-yellow region due to the recombination of electrons trapped in singly ionized oxygen vacancies and photoexcited holes. This facile, reproducible and effective low-cost approach is promising for the future large-scale synthesis of wurtzite ZnO nanostructures for different applications in nanotechnology. © 2012 Elsevier Ltd and Techna Group S.r.l.