1Christian College of Engineering & Technology, Kailash Nagar, Bhilai, 490026, Chhattisgarh, India
2S.O.S. in Physics & Astrophysics, Pt. Ravishankar Shukla University, Raipur 492010, Chhattisgarh, India
3Department of Physics, R.T.M. Nagpur University, Nagpur 440033, India
4Department of Physics, V.M.V. Commerce J.M.T Arts and J.J.T. Science College, Nagpur 440008, India
Adv. Mater. Lett., 2014, 5 (7), pp 396-399
DOI: 10.5185/amlett.2014.amwc.1210
Publication Date (Web): Apr 27, 2014
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E-mail: anil.choubey@hotmail.com
Dy doped strontium aluminate phosphor (SrAl4O7:Dy(15% molar concentration)) was synthesized by combustion method using urea as a reducer at initiating temperature of 600oC. The absorption spectra shows the absorption edges at l = 242 nm, thus the band gap of 5.11 eV. The Thermoluminescence (TL) property of Dy(15%) doped SrAl4O7 nanophosphor has been investigated for l-irradiation. The TL glow curve of SrAl4O7:Dy (15%) phosphor with different ?-ray doses show the dose increases the TL- intensity while the temperature corresponding to maximum intensity remains nearly same. The maximum TL-intensity observes around 172.84 oC for the different doses. It was found that TL intensity strongly depends upon the -dose. It shows linear response upto 2.36 kGy. Hence Dy(15%) doped SrAl4O7 could be used for TL Dosimetry upto 2.36 kGy.
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