The effect of X-ray exposure on Ba2SiO4:Eu3+

被引：7

作者：

Volhard, Max-Fabian ^{[1
]}

Juestel, Thomas ^{[1
]}

机构：

[1] Munster Univ Appl Sci, Dept Chem Engn, Stegerwaldstr 39, D-48565 Steinfurt, Germany

来源：

OPTICS COMMUNICATIONS | 2018年 / 410卷

关键词：

Solid state actinometer; X-ray excitation; X-ray exposure; Dosimetry phosphor; Redox chemistry; Europium; OPTICAL-PROPERTIES; GREEN; LUMINESCENCE; PHOSPHORS; EUROPIUM; CA; SR;

D O I：

10.1016/j.optcom.2017.10.050

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The ortho-silicates Ba2SiO4:Eu3+ and Ba2SiO4:Eu2+ are well-established materials for fluorescent light sources, e.g., phosphor converted LEDs. Samples containing Eu2+ or Eu3+ were synthesised by the solid-state-method, and the phase purity was determined by X-ray powder diffractometry. The photoluminescence of both phosphors was examined as a function of the pre-treatment. Upon irradiation of Ba2SiO4:Eu3+ with X-rays (tungsten target source), the reduction of Eu3+ towards Eu2+ was observed. This reduction behaviour was thoroughly recorded, and the linearity of the process was determined. Furthermore, the relationship between the acceleration voltage and the reduction process is discussed. (c) 2017 Elsevier B.V. All rights reserved.

引用

页码：617 / 622

页数：6

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