Pressure-assisted combustion synthesis of red-emitting SrIn₂O₄: Eu3+ phosphor powders for applications in solid state white lamps
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Red-emitting phosphor powders of SrIn2O4 activated with Eu3+ ions were synthesized by a high pressure assisted combustion method. X-ray diffraction analysis of the crystalline properties of these powders revealed single phase SrIn2O4 for Eu concentrations up to 4 atomic % of Eu. The photo and cathodoluminescence emission spectra of SrIn2O4: Eu3+ powder shows bright red emission mainly caused by the 5D0→7F2 intra-shell transition of Eu3+. Furthermore, photoluminescence excitation (PLE) spectroscopy revealed that an efficient energy transfer from the SrIn2O4 host lattice onto the Eu ions is accomplished in addition to the excitation band peaked at λ = 396 nm that directly excites the Eu ions, making this material an excellent candidate for applications in solid state white-emitting lamps.
Abstract
Red-emitting phosphor powders of SrIn2O4 activated with Eu3+ ions were synthesized by a high pressure assisted combustion method. X-ray diffraction analysis of the crystalline properties of these powders revealed single phase SrIn2O4 for Eu concentrations up to 4 atomic % of Eu. The photo and cathodoluminescence emission spectra of SrIn2O4: Eu3+ powder shows bright red emission mainly caused by the 5D0→7F2 intra-shell transition of Eu3+. Furthermore, photoluminescence excitation (PLE) spectroscopy revealed that an efficient energy transfer from the SrIn2O4 host lattice onto the Eu ions is accomplished in addition to the excitation band peaked at λ = 396 nm that directly excites the Eu ions, making this material an excellent candidate for applications in solid state white-emitting lamps.
참고문헌 (10)
- Th. Gessmann, , J. Appl. Phys, 95, pp.2203~2216 (2004)
- T. Minami, , Jpn. J.Appl. Phys. Part 2, 30, pp.117~119 (1991)
- F.S. Kao, , J. Solid State Chem, 156, pp.84~87 (2001)
- F.S. Kao, , Mater. Chem Phys, 76, pp.295~298 (2002)
- A. Baszczuk, , J. Alloy Compd, 395, pp.88~92 (2005)
- H. Yamamoto, , J. Electrochem. Soc, pp.15~20
- X. Liu, , J. Electrochem. Soc, 154, pp.21~27 (2007)
- O. Ozuna, , Appl. Phys. Lett, 84, pp.1296~1298 (2004)
- N. Rakov, , Appl.Phys. Lett, 83, pp.272~274 (2003)
- O. Ozuna, , J. Phys.: Cond.Matter, pp.2585~2591 (2004)