Yang, Jun and Li, Chunxia and Cheng, Ziyong and Zhang, Xiaoming and Quan, Zewei and Zhang, Cuimiao and Lin, Jun (2007) Size-tailored synthesis and luminescent properties of one-dimensional Gd2O3 : Eu3+ nanorods and microrods. JOURNAL OF PHYSICAL CHEMISTRY C, 111 (49). pp. 18148-18154.
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Official URL: http://dx.doi.org/10.1021/jp0767112
Nearly monodisperse and well-defined one-dimensional (1D) Gd2O3:Eu3+ nanorods and microrods were successfully prepared through a large-scale and facile hydrothermal method followed by a subsequent heat treatment process, without using any catalyst or template. X-ray diffraction (XRD), thermogravimetric analysis and differential scanning calorimetry (TGA-DSC), scanning electron microscopy (SEM), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), selected area electron diffraction (SAED), photoluminescence (PL) and cathodoluminescence (CL) spectra as well as kinetic decays were used to characterize the samples. The size of the Gd2O3:Eu3+ rods could be modulated from micro- to nanoscale with the increase of pH value using ammonia solution. The as-formed product via the hydrothermal process, Gd(OH)(3):Eu3+, could transform to cubic Gd2O3:Eu3+ with the same morphology and a slight shrinking in size after a postannealing process. The formation mechanism for the Gd(OH)(3) rods has been proposed. Both the Gd2O3:Eu3+ nanorods and microrods exhibit the same strong red emission corresponding to D-5(o) -> F-7(2) transition (610 nm) of Eu3+ under UV light excitation (257 nm) and low-voltage electron beam excitation (1-5 kV), which have potential applications in fluorescent lamps and field emission displays.
|Subjects:||Material Science > Nanofabrication processes and tools|
Physical Science > Nano objects
Material Science > Nanochemistry
|Deposited By:||Anuj Seth|
|Deposited On:||17 Dec 2008 14:43|
|Last Modified:||20 Jan 2009 10:28|
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