Ultrasound-assisted synthesis, characterization and optical property of 0-3 wt% Sn-doped ZnO

• Main Authors: Phuruangrat A., Kongnuanyai S., Thongtem T., Thongtem S.
• Format: Article
• Language: English
• Published: 2014
• Online Access: http://www.scopus.com/inward/record.url?eid=2-s2.0-84870233685&partnerID=40&md5=47f7e88d28ec0953ebf7d5c229c952cf; http://cmuir.cmu.ac.th/handle/6653943832/6988
• Institution: Chiang Mai University

Sn-doped ZnO samples were successfully synthesized by an ultrasonic solution method, and characterized by X-ray diffraction and electron microscopy. All samples were specified as hexagonal wurtzite ZnO with flower-like structure for pure ZnO and 1 wt% Sn-doped ZnO, and with agglomerates of nanoparticles for 2 and 3 wt% Sn-doped ZnO. Room temperature UV-visible spectra exhibited 373 nm band edge absorption for wurtzite hexagonal pure ZnO, and were red-shift broad absorption bands from ultraviolet for pure ZnO to visible region for 1, 2 and 3 wt% Sn-doped ZnO. The improvement of visible absorption in the Sn-doped ZnO samples was suggested to be the result of lattice defects caused by Sn dopant. © 2012 Elsevier B.V. All rights reserved.