SrZrO3:Eu3+ nanoparticles with a size of about 100 nm were synthesized by a simple gel combustion route and characterized by X-ray diffraction, scanning electron microscopy, dynamic light scattering, and photoluminescence techniques. Based on the time-resolved emission data, it was inferred that three different types of Eu3+ ions were present in the matrix. The first type was a long-lived species (similar to tau = 6.0 ms) present at symmetric "Sr2+" sites, observed for excitations at 229 and 393 nm. The second was a short-lived species (tau = 1.0 ms) observed for excitations at 229, 296, and 393 nm, while for 296-nm excitation, a long-lived species (tau = 4.0 ms) was also observed. This suggested that Eu3+ ions can be present at relatively lower symmetric "Zr4+" sites with two different environments, which differ in the presence of charge-compensating defects. The color coordinates of the system were evaluated and plotted on a CIE index diagram.
机构:
Indian Inst Technol Delhi, Dept Phys, Nanophoton Lab, New Delhi 110016, IndiaIndian Inst Technol Delhi, Dept Phys, Nanophoton Lab, New Delhi 110016, India
Das, Subrata
Reddy, A. Amarnath
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Indian Inst Technol Delhi, Dept Phys, Nanophoton Lab, New Delhi 110016, IndiaIndian Inst Technol Delhi, Dept Phys, Nanophoton Lab, New Delhi 110016, India
Reddy, A. Amarnath
Babu, S. Surendra
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Instrument Res & Dev Estab, Laser Instrumentat Design Ctr, Dehra Dun 248008, IndiaIndian Inst Technol Delhi, Dept Phys, Nanophoton Lab, New Delhi 110016, India
Babu, S. Surendra
Prakash, G. Vijaya
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Indian Inst Technol Delhi, Dept Phys, Nanophoton Lab, New Delhi 110016, IndiaIndian Inst Technol Delhi, Dept Phys, Nanophoton Lab, New Delhi 110016, India
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Univ Puerto Rico, Dept Phys, NASA Trop Ctr Earth & Space Studies, Mayaguez, PR 00681 USAUniv Puerto Rico, Dept Phys, NASA Trop Ctr Earth & Space Studies, Mayaguez, PR 00681 USA
Jia, WY
Xu, WL
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Univ Puerto Rico, Dept Phys, NASA Trop Ctr Earth & Space Studies, Mayaguez, PR 00681 USAUniv Puerto Rico, Dept Phys, NASA Trop Ctr Earth & Space Studies, Mayaguez, PR 00681 USA
Xu, WL
Rivera, I
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Univ Puerto Rico, Dept Phys, NASA Trop Ctr Earth & Space Studies, Mayaguez, PR 00681 USAUniv Puerto Rico, Dept Phys, NASA Trop Ctr Earth & Space Studies, Mayaguez, PR 00681 USA
Rivera, I
Pérez, A
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Univ Puerto Rico, Dept Phys, NASA Trop Ctr Earth & Space Studies, Mayaguez, PR 00681 USAUniv Puerto Rico, Dept Phys, NASA Trop Ctr Earth & Space Studies, Mayaguez, PR 00681 USA
Pérez, A
Fernández, F
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Univ Puerto Rico, Dept Phys, NASA Trop Ctr Earth & Space Studies, Mayaguez, PR 00681 USAUniv Puerto Rico, Dept Phys, NASA Trop Ctr Earth & Space Studies, Mayaguez, PR 00681 USA
机构:
Indian Inst Technol Delhi, Dept Phys, Nanophoton Lab, New Delhi 110016, IndiaIndian Inst Technol Delhi, Dept Phys, Nanophoton Lab, New Delhi 110016, India
Das, Subrata
Reddy, A. Amarnath
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机构:
Indian Inst Technol Delhi, Dept Phys, Nanophoton Lab, New Delhi 110016, IndiaIndian Inst Technol Delhi, Dept Phys, Nanophoton Lab, New Delhi 110016, India
Reddy, A. Amarnath
Babu, S. Surendra
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Instrument Res & Dev Estab, Laser Instrumentat Design Ctr, Dehra Dun 248008, IndiaIndian Inst Technol Delhi, Dept Phys, Nanophoton Lab, New Delhi 110016, India
Babu, S. Surendra
Prakash, G. Vijaya
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Indian Inst Technol Delhi, Dept Phys, Nanophoton Lab, New Delhi 110016, IndiaIndian Inst Technol Delhi, Dept Phys, Nanophoton Lab, New Delhi 110016, India
机构:
Univ Puerto Rico, Dept Phys, NASA Trop Ctr Earth & Space Studies, Mayaguez, PR 00681 USAUniv Puerto Rico, Dept Phys, NASA Trop Ctr Earth & Space Studies, Mayaguez, PR 00681 USA
Jia, WY
Xu, WL
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Univ Puerto Rico, Dept Phys, NASA Trop Ctr Earth & Space Studies, Mayaguez, PR 00681 USAUniv Puerto Rico, Dept Phys, NASA Trop Ctr Earth & Space Studies, Mayaguez, PR 00681 USA
Xu, WL
Rivera, I
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Univ Puerto Rico, Dept Phys, NASA Trop Ctr Earth & Space Studies, Mayaguez, PR 00681 USAUniv Puerto Rico, Dept Phys, NASA Trop Ctr Earth & Space Studies, Mayaguez, PR 00681 USA
Rivera, I
Pérez, A
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Univ Puerto Rico, Dept Phys, NASA Trop Ctr Earth & Space Studies, Mayaguez, PR 00681 USAUniv Puerto Rico, Dept Phys, NASA Trop Ctr Earth & Space Studies, Mayaguez, PR 00681 USA
Pérez, A
Fernández, F
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Univ Puerto Rico, Dept Phys, NASA Trop Ctr Earth & Space Studies, Mayaguez, PR 00681 USAUniv Puerto Rico, Dept Phys, NASA Trop Ctr Earth & Space Studies, Mayaguez, PR 00681 USA