Fabrication and characterizations of (Lu, Gd)2O3:Eu scintillation ceramics. Issue 2 (1st February 2017)

• Record Type: Journal Article
• Authors: Cao, Maoqing; Xu, Jiayue; Hu, Chen; Kou, Huamin; Shi, Yun; Chen, Haohong; Dai, Jiawei; Pan, Yubai; Li, Jiang
• Is Part Of: Ceramics international. Volume 43:Issue 2(2017)
• Page Start: 2165
• Page End: 2169
• Publication Date: 2017-02-01
• Subjects: (Lu, Gd)2O3:Eu -- Ceramic scintillators -- Fluorescent lifetime -- Thermally stimulated luminescence -- Oxygen vacancies; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2016.10.198
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: In this paper, (Lu, Gd)2 O3 :Eu ceramics were consolidated by the solid-state reaction method combined with vacuum sintering at 1820 °C for 10 h. It is found that the Gd2 O3 incorporates well into the Lu2 O3 lattices and forms a solid solution. Particularly, strong red emission of 5 D0 → 7 F2 transition of Eu 3+ at 611 nm, matched well to the spectral sensitivity of typical CCD arrays, was observed in the photoluminescence and radioluminescence spectra. What's more, radioluminescence intensity of the 4f→4f transitions of Eu 3+ reaches up to 10 times of bismuth germanium oxide (BGO) single crystal reference scintillator. Intensities of the radioluminescence and the integrated thermoluminescence versus temperatures, as well as the influence of annealing treatment on the thermoluminescence intensity, were also studied. We think that (Lu, Gd)2 O3 :Eu ceramic scintillators may have great potential in medical X-ray computed tomography (CT) due to their excellent properties.