Optical evidence for the effect of gamma-ray irradiation on ferroelectric Pb(Zr0.52Ti0.48)O3 thin films

被引:0
作者
Junhwi Lim
Y. S. Lee
Sun A. Yang
Sang Don Bu
机构
[1] Soongsil University,Department of Physics
[2] Chonbuk National University,Department of Physics
来源
Journal of the Korean Physical Society | 2016年 / 68卷
关键词
Pb(Zr,Ti)O; Gamma-ray irradiation; Photoluminescence;
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学科分类号
摘要
We investigated the visible emission property of Pb(Zr,Ti)O3 (PZT) thin films irradiated with gammy-ray (γ-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 γ-ray irradiation, and the intensity of the emission increased with increasing dose. The spectrum of the γ-ray-induced emission was quite narrow, which was quite different from that due to normal defects such as oxygen vacancies. We suggest that the γ-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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页码:1347 / 1351
页数:4
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