کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1493640 | 1510793 | 2015 | 4 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Photoluminescence, photo-stimulated luminescence and thermoluminescence properties of CaB2O4 crystals activated with Ce3+ Photoluminescence, photo-stimulated luminescence and thermoluminescence properties of CaB2O4 crystals activated with Ce3+](/preview/png/1493640.png)
• PL, PSL, and TL properties of a Ce3+-doped CaB2O4 crystal were studied.
• A PL emission band in the 350–370 nm was obtained under excitation at 325 nm.
• The QE and the decay time of Ce3+ were estimated to be about 70% and 29 ns.
• Good linear TL and PSL responses were observed in the 1–10,000 mGy X-ray dose range.
Photoluminescence (PL), photo-stimulated luminescence (PSL), and thermoluminescence (TL) properties of a Ce-doped CaB2O4 crystal were studied. The Ce-doped crystal was prepared by the simple solidification method using a Pt crucible under nitrogen atmosphere. A PL emission band in the 350–370 nm wavelength range was obtained under excitation at 325 nm owing to the 5d (t2g)–4f (2F5/2, 2F7/2)-allowed transition of the Ce3+ emission center. The fluorescence quantum efficiency and the decay time of Ce3+ were estimated to be about 70% and 29 ns, respectively. The 5d–4f emission band of Ce3+ also appeared in the 350–370 nm wavelength range in the TL and PSL spectra. Good linear TL and PSL responses were observed in the 1–1000 mGy and 1–10,000 mGy X-ray dose range, respectively.
Journal: Optical Materials - Volume 41, March 2015, Pages 49–52