Multi-color luminescence of uniform CdWO4 nanorods through Eu3+ ion doping. Issue 12 (10th February 2015)

• Record Type: Journal Article
• Authors: Yue, Dan; Li, Qingfeng; Lu, Wei; Wang, Qi; Wang, Mengnan; Li, Chunyang; Jin, Lin; Shi, Yurong; Wang, Zhenling; Hao, Jianhua
• Is Part Of: Journal of materials chemistry. Volume 3:Issue 12(2015)
• Page Start: 2865
• Page End: 2871
• Publication Date: 2015-02-10
• Subjects: Materials -- Periodicals; Chemistry, Analytic -- Periodicals; Optical materials -- Research -- Periodicals; Electronics -- Materials -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c4tc02409e
• Languages: English
• ISSNs: 2050-7526

Abstract

Abstract : Multi-color luminescence of uniform CdWO4 :Eu 3+ nanorods can be realized only through altering the doping concentration of Eu 3+ ions. Abstract : Uniform Eu 3+ doped CdWO4 nanorods were prepared via a simple hydrothermal method and characterized by X-ray diffraction, transmission electron microscopy, photoluminescence (PL) spectroscopy and PL lifetime measurements. The results indicate that the obtained Eu 3+ doped CdWO4 nanorods have monoclinic phase structure, and the phase structure can be retained at Eu 3+ doping concentrations of 0.4–4.0%. The diameter of nanorods decreases from 27 to 15 nm with an increase in the doping concentrations, and the morphology becomes irregular at the Eu 3+ doping concentration of 6.5%. Under the excitation of ultraviolet light, the relative intensities of blue-green emission ascribed to WO4 2− and red emission from Eu 3+ can be tuned through doping Eu 3+ ions into the CdWO4 nanorods and thus altering the energy transfer between WO4 2− and Eu 3+ . Hence, the multi-color luminescence in the same host at a single excited wavelength can be realized simply by altering the doping concentration of Eu 3+ . These luminescent nanomaterials may have potential applications in displays, light sources, bio-imaging and so on.