Characterization,luminescence and EPR investigations of Eu2+ activated strontium aluminate phosphor |
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| Authors: | Vijay Singh Jun-Jie Zhu Manoj Tiwari Manish Soni Mahendra Aynayas Seok-Hee Hyun R. Narayanan Manoj Mohapatra V. Natarajan |
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| Affiliation: | 1. Department of Chemistry, Key Lab of Analytical Chemistry for Life Science, Nanjing University, Nanjing 210093, PR China;2. Manoharbhai Patel Institute of Engineering and Technology, Kudwa Village, Gondia 441 614, India;3. Department of Physics, Sadhu Vaswani College, Bairagarh, Bhopal 462 030, India;4. Centre for Scientific Instruments, Kyungpook National University, Daegu 702701, South Korea;5. Department of Dental Biomaterials, School of Dentistry, Kyungpook National University, Daegu, South Korea;6. Radiochemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India |
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| Abstract: | Strong blue-green light emitting Eu doped SrAl2O4 phosphor was synthesized by a low-temperature initiated, self-propagating and gas producing combustion process in a very short time (<5 min). The prepared powder was characterized by X-ray diffraction, Fourier-transform infrared spectrometry and scanning electron microscopy. The excitation spectrum shows a peak at 397 nm. Upon excitation at 397 nm, the emission spectrum exhibits a well defined broad band with maximum at 493 nm corresponding to 4f65d → 4f7 transition. Electron paramagnetic resonance (EPR) measurements at X-band showed low field signals due to Eu2+ ions in SrAl2O4:Eu. |
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