Cathodo-, Thermo-, and Photoluminescent Properties of Nano-Y2 O3 :Eu3+ Fabricated by Controlled Combustion Synthesis

• Published in: Journal of nanomaterials Vol. 2015
• Main Authors: Anh, Tran Kim, Chau, Pham Thi Minh, Hai, Nguyen Thi Quy, Minh, Le Quoc
• Format: Journal Article
• Language: English
• Published: 01.01.2015
• Subjects: Annealing; Combustion; Combustion synthesis; Excitation; Field emission; Nanoparticles; Nanostructure; Photoluminescence; Ultraviolet
• ISSN: 1687-4110; 1687-4129
• DOI: 10.1155/2015/637124

Y sub(2) O sub(3) :Eu super(3+) nanophosphors were prepared through combustion reaction under controlled condition of the fuel ethylenediaminetetraacetic acid (EDTA-Na sub(2) ) and in the temperature range from 350 to 700 degree C. The products were characterized by X-ray diffraction (XRD), field emission scattering electron microscopy (FESEM), and energy dispersive spectroscopy (EDS). The results showed that Y sub(2) O sub(3) :Eu super(3+) nanoparticles were successfully synthesized by combustion method at low temperature and in short reaction time. The light-emitting ability of Y sub(2) O sub(3) :Eu super(3+) nanoparticles upon the electron excitation has been studied at the potentials 5, 10, and 15 kV. The thermoluminescent glow curves have elucidated an intense peak at 117 degree C after UV exposure and at least two peaks at 125 and 336 degree C with Gamma irradiation. Photoluminescent spectra of Y sub(2) O sub(3) :Eu super(3+) nanoparticles exhibited strong red luminescent color with highest sharp band at 612 nm under excitation in ultraviolet at 254, 394 and in visible at 465 nm. The dependence of photoluminescent properties of Y sub(2) O sub(3) :Eu super(3+) nanoparticles on annealing temperature and concentration of Eu super(3+) was also studied.