Eur. Phys. J. Appl. Phys.
Volume 68, Number 3, December 2014
|Number of page(s)||7|
|Section||Imaging, Microscopy and Spectroscopy|
|Published online||12 December 2014|
Synthesis and photoluminescence studies on YAl3(BO3)4:Tb3+ phosphor
Department of Physics, Anna University, MIT Campus, Chennai
600 044, Tamil Nadu, India
2 Radiological Safety Division, Indira Gandhi Centre for Atomic Research, Kalpakkam 603 102, Tamil Nadu, India
3 Research and Development Laboratory, Department of Physics, Saveetha Engineering College, Chennai 602 105, Tamil Nadu, India
a e-mail: firstname.lastname@example.org
Revised: 18 September 2014
Accepted: 15 October 2014
Published online: 12 December 2014
Terbium (Tb3+) doped yttrium aluminium borate phosphors (YAl3(BO3)4) with different compositions such as YAl3(BO3)4:Tb3+, Y1−xAl3(BO3)4:Tbx3+ and YAl(3−x)(BO3)4:Tbx3+ (x = 1−8 mol.%) were synthesized using modified solid state reaction technique. The synthesized phosphor was studied using powder X-ray diffraction analysis (XRD), photoluminescence spectroscopy (PL), high resolution-scanning electron microscope (HR-SEM). Lattice parameters are calculated for the Tb3+ doped and substituted YAB phosphors using XRD analysis. The phosphor exhibits green emission at 572 nm with 375 nm of excitation. It is found that the Tb3+ ions substitution in the sites Y3+ and Al3+ ions in Y1–xAl3(BO3)4:Tbx3+ and YAl(3–x)(BO3)4:Tbx3+ leads to overlapping of energy levels which affects the PL intensity of the phosphor significantly. Thus, phosphor synthesized with the composition YAl3(BO3)4:Tb3+, acquires higher photoluminescence (PL) intensity when compared to Y1–xAl3(BO3)4:Tbx3+ and YAl(3–x)(BO3)4:Tbx3+ phosphors. Temperature dependent PL property (thermal quenching studies) of YAl3(BO3)4:Tb3+ was also performed up to 250 °C. Further, it is found that the PL intensity of the studied phosphor is comparable with commercial green phosphor. HR-SEM analysis demonstrates that the phosphors are grown as nanorods with an average diameter of 50–80 nm and length 250–500 nm.
© EDP Sciences, 2014
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