Luminescence analysis of SrGa2Si2O8: RE3+(RE = Dy, Tm) phosphors.
This article reports on the luminescence properties of rare earth (Dy3+and Tm3+)ions doped SrGa2Si2O8phosphor were studied. SrGa2Si2O8phosphors weresynthesizedby employing solid state reaction method.From the measured X-ray diffraction (XRD) pattern of the samplemonoclinic phase structure has been observed. Thermoluminescenceand Mechanoluminescence properties of the γ-ray irradiated samples have been studied. Photoluminescence spectra of Dy3+activated SrGa2Si2O8phosphor has been measured with an excitation wavelength at 348 nm,and it shows two emission bands at 483 and 574 nm due to4F9/2→6H15/2and4F9/2→6H13/2transitions respectively. Whereas the photoluminescence spectra of Tm3+activated SrGa2Si2O8phosphor has been measured with an excitation wavelength at 359 nm and it exhibits two emission bands at 454 and 472 nm due to1D2→3F4and1G4→3H6transitions respectively. In thermoluminescence study, γ-irradiatedthermoluminescence glow curve of SrGa2Si2O8:Dy3+phosphor shows two well defined peaks at 293 °C (peak1)and 170 °C (peak2) whereas thermoluminescence glow curve of SrGa2Si2O8:Tm3+phosphor shows peaks at 292 °C (peak1) and 184 °C (peak2) indicating that two sets of traps are being activated within the particular temperature range and the trapping parameters associated with the prominent glow peaks of SrGa2Si2O8:Dy3+and SrGa2Si2O8:Tm3+are calculated using Chen's peak shape and initial rise method.From the Mechanoluminescence study, only one glow peak has been observed. Copyright © 2016 John Wiley & Sons, Ltd.
Department of Physics, R.T.M.Nagpur University, Nagpur, 440033, Maharashtra, India.
Monali
M
R Kadukar
Department of Physics, R.T.M.Nagpur University, Nagpur, 440033, Maharashtra, India.
S J
SJ
Dhoble
Department of Physics, C.M.D.P.G.College, Bilaspur, 495001, Chattisgarh, India.
A K
AK
Sahu
Department of Physics, C.M.D.P.G.College, Bilaspur, 495001, Chattisgarh, India.
V
V
Nayar
Department of Physics, Sri Venkateswara Degree College, Kadapa, 516003, Andhra Pradesh, India.
S
S
Sailaja
Department of Physics, Sri Venkateswara Degree College, Kadapa, 516003, Andhra Pradesh, India.
B Sudhakar
BS
Reddy
D004419:Dysprosium / Q000032:analysis*; D005708:Gallium / Q000032:analysis*; D049449:Luminescence; D010100:Oxygen / Q000032:analysis*; D013324:Strontium / Q000032:analysis*; D013932:Thulium / Q000032:analysis*
D004419:Dysprosium; D013932:Thulium; D005708:Gallium; D010100:Oxygen; D013324:Strontium
mechanoluminescence; photoluminescence; thermoluminescence; trappingparameters