HfO2:X (X = Eu3+, Ce3+, Y3+) Sol Gel Powders for Ultradense Scintillating Materials

被引：42

作者：

LeLuyer, C. ^{[1
]}

Villanueva-Ibanez, M. ^{[1
]}

Pillonnet, A. ^{[1
]}

Dujardin, C. ^{[1
]}

机构：

[1] Univ Lyon 1, CNRS, UMR 5620, LPCML, F-69622 Villeurbanne, France

来源：

JOURNAL OF PHYSICAL CHEMISTRY A | 2008年 / 112卷 / 41期

关键词：

D O I：

10.1021/jp803339n

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Hafnium dioxide (HfO2) presents a high crystalline density which makes it attractive for host lattice activated by rare earths for applications as scintillating materials. HfO2 powders doped with Eu3+ or Ce3+ luminescent ions are prepared by sol gel process. The annealing temperature and the concentration of doping ions are optimized to provide the powder presenting the best scintillation yield. The powders are crystallized in monoclinic phase whatever annealing temperature above 800 degrees C. The emission spectra are characterized by a white broadband between 400 and 600 nm. After optimization, the most efficient composition, namely HfO2:2.5% Eu 1% Y (molar percent) exhibits a scintillation yield about 31 000 photons/MeV, which is about 3.8 times that of the standard Bi3Ge5O12 (BGO) commercial powder.

引用

页码：10152 / 10155

页数：4

共 21 条

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