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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Nagabhushana, H. Nagabhushana, B. M. Shivram, M. Prashantha, S. C. Sharma, S. C. Harikrishna, R. Thyagarajan, K. |
| Description | Country affiliation: India Author Affiliation: Shivram M ( Jawaharlal Nehru Technological University, Anantapur 515 002, India); Prashantha SC ( Department of Physics, East West Institute of Technology, Bangalore 560 091, India. Electronic address: scphysics@gmail.com.); Nagabhushana H ( Centre for Nano Research (CNR), Tumkur University, Tumkur 572 103, India. Electronic address: bhushanvlc@gmail.com.); Sharma SC ( B.S.Narayan center of excellance for advanced materials, Department of Mechanical Engineering, B.M.S. Institute of Technology, Yelahanka, Bangalore 560 064, India.); Thyagarajan K ( Department of Physics, JNTUA College of Engineering, Pulivendula 516 390, India.); Harikrishna R ( Department of Chemistry, M.S. Ramaiah Institute of Technology, Bangalore 560 054, India.); Nagabhushana BM ( Department of Chemistry, M.S. Ramaiah Institute of Technology, Bangalore 560 054, India.) |
| Abstract | Nanoparticles of Eu3+ doped (1-9 mol%) CaTiO3 were prepared using low temperature (500°C) solution combustion technique using metal nitrates as precursors and urea as fuel. The powder X-ray diffraction patterns of the as-formed products show single orthorhombic phase. The crystallite size was estimated using Scherrer's method and found to be in the range 40-45 nm. The effect of Eu3+ ions on luminescence characteristics of CaTiO3 was studied and the results were discussed in detail. The phosphors exhibit bright red emission upon 398 nm excitation. The characteristic emission peaks recorded at â ¼540, 593, 615, 653, 696 and 706 nm (5D0â 7Fj=0,1,2,3,4,5) were attributed to Eu3+ ions. The electronic transition corresponding to 5D0â 7F2 (615 nm) was stronger than the magnetic dipole transition 5D0â 7F1 of Eu3+ ions (596 nm). The CIE chromaticity co-ordinates were calculated from emission spectra, the values (x,y) very close to NTSC standard value of red emission. Therefore, the present phosphors were highly useful for display applications. |
| ISSN | 13861425 |
| Volume Number | 120 |
| e-ISSN | 18733557 |
| Journal | Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2014-01-01 |
| Publisher Place | Great Britain (UK) |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Calcium Compounds Chemistry Europium Luminescent Agents Oxides Titanium Luminescence Luminescent Measurements Journal Article Research Support, Non-u.s. Gov't Discipline Spectroscopy |
| Content Type | Text |
| Resource Type | Article |
| Subject | Spectroscopy Atomic and Molecular Physics, and Optics Analytical Chemistry Instrumentation |
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