We investigated the visible emission property of Pb(Zr,Ti)O-3 (PZT) thin films irradiated with gammy-ray (gamma-ray) irradiated at various total doses up to 1000 kGy. The PZT thin films were prepared on Pt/Ti/SiO2/Si substrates by using a sol-gel method with a spin-coating process. The visible emission was found to emerge near 550 nm upon gamma-ray irradiation, and the intensity of the emission increased with increasing dose. The spectrum of the gamma-ray-induced emission was quite narrow, which was quite different from that due to normal defects such as oxygen vacancies. We suggest that the gamma-ray irradiation generates inside the PZT films a specific type of defect state that can be detected by using low-temperature photoluminescence spectroscopy.
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Natl Inst Mat Phys, Magurele 77125, Ilfov, Romania
Univ Bucharest, Fac Phys, Magurele 077125, RomaniaNatl Inst Mat Phys, Magurele 77125, Ilfov, Romania
Boni, Andra Georgia
Chirila, Cristina
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Natl Inst Mat Phys, Magurele 77125, Ilfov, RomaniaNatl Inst Mat Phys, Magurele 77125, Ilfov, Romania
Chirila, Cristina
Pasuk, Iuliana
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Natl Inst Mat Phys, Magurele 77125, Ilfov, RomaniaNatl Inst Mat Phys, Magurele 77125, Ilfov, Romania
Pasuk, Iuliana
Negrea, Raluca
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Natl Inst Mat Phys, Magurele 77125, Ilfov, RomaniaNatl Inst Mat Phys, Magurele 77125, Ilfov, Romania
Negrea, Raluca
Trupina, Lucian
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Natl Inst Mat Phys, Magurele 77125, Ilfov, RomaniaNatl Inst Mat Phys, Magurele 77125, Ilfov, Romania
Trupina, Lucian
Le Rhun, Gwenael
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CEA, LETI, F-38054 Grenoble 9, FranceNatl Inst Mat Phys, Magurele 77125, Ilfov, Romania
Le Rhun, Gwenael
Vilquin, Bertrand
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Univ Lyon, Ecole Cent Lyon, INL, CNRS UMR5270, F-69134 Ecully, FranceNatl Inst Mat Phys, Magurele 77125, Ilfov, Romania
Vilquin, Bertrand
Pintilie, Ioana
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Natl Inst Mat Phys, Magurele 77125, Ilfov, RomaniaNatl Inst Mat Phys, Magurele 77125, Ilfov, Romania
Pintilie, Ioana
Pintilie, Lucian
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Natl Inst Mat Phys, Magurele 77125, Ilfov, RomaniaNatl Inst Mat Phys, Magurele 77125, Ilfov, Romania