Optically stimulated luminescence of Dy³⁺-doped NaCaPO₄ glass-ceramics

Jie Xu^1,2，Zhaoyang Chen¹，Minqiang Gai¹，Yanwei Fan¹，Chengfa He³

1. Key Laboratory of Functional Materials and Devices for Special Environments of CAS,Xinjiang Key Laboratory of Electronic Information Materials and Devices,Xinjiang Technical Institute of Physics and Chemistry of CAS2. University of Chinese Academy of Sciences3. Laboratory of Solid State Radiation Physics

摘 要：Dy³⁺-doped glass-ceramics containing NaCaPO₄ crystals were successfully fabricated by heat treatment at base glass,and the luminescence properties were investigated for potential applications in radiation measurements.The photo luminescence（PL） excitation and emission spectra exhibit transitions related to Dy³⁺ ions corresponding to the strongest excitation and emission wavelengths at 351 and 575 nm,respectively.The CW-OSL properties as a function of dopant concentration,pre-heating temperature,pre-heating time and signal fading were investigated.The most appropriate Dy³⁺ion concentration was found to be 0.25 mol%.The TL glow curves have a broad peak feature peaking at 195±5 ℃.The fading of the OSL signal would keep stable in five days with the intensity value of about 76.11%.The samples also exhibit good signal reusability and a broad linear dose response range（0.02-1000 Gy）.

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