CaS:Eu,Sm 荧光粉表面二氧化硅包覆对其光激励发光特性的影响

盖敏强; 陈朝阳; 范艳伟; 王军华; 谢永新

doi:10.3788/fgxb20133405.0547

您当前的位置：

首页 >

文章列表页 >

CaS:Eu,Sm 荧光粉表面二氧化硅包覆对其光激励发光特性的影响

材料合成及性能 | 更新时间：2020-08-12

- CaS:Eu,Sm 荧光粉表面二氧化硅包覆对其光激励发光特性的影响
- Effects of Silica-encapsulated CaS:Eu,Sm Phosphors on Optically Stimulated Luminescence Properties
- 发光学报 2013年34卷第5期页码：547-553
- 作者机构：
  
  1. 中国科学院新疆理化技术研究所,新疆乌鲁木齐,830011
  2. 中国科学院大学北京,100049
  3. 新疆电子信息材料与器件重点实验室,新疆乌鲁木齐,830011
- 作者简介：
- 基金信息：
  
  国家自然科学基金(10875168,10475112)资助项目()
- DOI：10.3788/fgxb20133405.0547
  中图分类号： O434.13;O614.23+1
- 收稿日期：2013-01-07，
  
  修回日期：2013-03-05，
  
  网络出版日期：2013-03-29，
  
  纸质出版日期：2013-05-10
- 稿件说明：
移动端阅览
盖敏强, 陈朝阳, 范艳伟, 王军华, 谢永新. CaS:Eu,Sm 荧光粉表面二氧化硅包覆对其光激励发光特性的影响[J]. 发光学报, 2013,34(5): 547-553

GAI Min-qiang, CHEN Zhao-yang, FAN Yan-wei, WANG Jun-hua, XIE Yong-xin. Effects of Silica-encapsulated CaS:Eu,Sm Phosphors on Optically Stimulated Luminescence Properties[J]. Chinese Journal of Luminescence, 2013,34(5): 547-553
盖敏强, 陈朝阳, 范艳伟, 王军华, 谢永新. CaS:Eu,Sm 荧光粉表面二氧化硅包覆对其光激励发光特性的影响[J]. 发光学报, 2013,34(5): 547-553 DOI： 10.3788/fgxb20133405.0547.

GAI Min-qiang, CHEN Zhao-yang, FAN Yan-wei, WANG Jun-hua, XIE Yong-xin. Effects of Silica-encapsulated CaS:Eu,Sm Phosphors on Optically Stimulated Luminescence Properties[J]. Chinese Journal of Luminescence, 2013,34(5): 547-553 DOI： 10.3788/fgxb20133405.0547.

摘要

改进了CaS:Eu

Sm 荧光粉在实时剂量计系统中的稳定性和实用性。以不同体积的正硅酸乙酯作为前驱体

采用溶胶凝胶法对CaS:Eu

Sm 荧光粉进行表面包覆。分别使用荧光分光光度计和酸度计对荧光粉的发光特性和防水特性进行表征。实验结果显示当质量分数为5%时

包覆层能明显提高荧光粉的稳定性且不影响荧光粉的发光强度。从材料的光激励发光和剂量响应测试实验中可以得出材料的退火特性以及相应的辐射剂量值。以CaS:Eu

Sm 荧光粉为基础的辐射剂量测试系统显示在0.1~300 Gy范围内具有良好的线性关系。结果显示表面包覆层明显抑制光激励发光特性

而且随着辐射剂量的增加

这种影响愈来愈显著。最后

我们提出了以光激励发光技术为基础的辐射剂量在线测试改进系统。

Abstract

The objective of this work was to improve the stability and reproducibility of CaS:Eu

Sm phosphors in a real-time dosimetry system. Different volumes of tetraethyl orthosilicate

were used as precursor and coated onto CaS:Eu

Sm phosphors by the sol-gel method. The luminescence properties and water resistance of the phosphors were evaluated using a fluorescence spectrometer and an acidometer respectively. The results show that 5%(mass fraction)of silica coating effectively improve their water resistance with minimum loss of light emission. The optically stimulated luminescence (OSL) decay and dose response of coated CaS:Eu

Sm phosphors offer an easy evaluation of the annealing time and specify dose. The dose characteristic is linear from 0.1 to 300 Gy. The 5% SiO

-coated CaS:Eu

Sm phosphors' variation of the reusability is below 2% at dose of 1 Gy. The amount of surface coating significantly affected the OSL signal

which became more pronounced with the increasing radiation dose. A novel dosimetry system based on the OSL technique is proposed for real-time measurement.

关键词

Keywords

references

Rao R, Gasiot J. Optically stimulated luminescence dosimetry [J]. Radiat. Prot. Dosim., 1983, 6(1/2/3/4):64-66.[2] Kravets V G. Using electron trapping materials for optical memory [J]. Opt. Mater, 2001, 16(3):369-375.[3] Lapraz D, Prévost H, Idri K, et al. On the PL, TSL and OSL properties of SrS:Ce, Sm phosphor [J]. Phys. Stat. Solidi (a), 2006. 203(15):3793-3800.[4] Liu Y P, Chen Z Y, Ba W Z, et al. Optically stimulated luminescence dosimeter based on CaS:Eu,Sm [J]. Nucl. Sci. Tech., 2008, 19(2):113-116.[5] Guo C, Huang D, Su Q. Methods to improve the fluorescence intensity of CaS:Eu2+ red-emitting phosphor for white LED [J]. Mater. Sci. Eng. B, 2006. 130(1):189-193.[6] Hasan Z, Solonenko M, Macfarlane P I, et al. Persistent high density spectral holeburning in CaS:Eu and CaS:Eu,Sm phosphors [J]. Appl. Phys. Lett., 1998, 72(19):2373-2375.[7] Benoit D, Dusseau L, Glaser M, et al. Performance studies of an optical fiber OSL/RL dosimetry system in pulsed high-intensity radiation beams [J]. Radiat. Meas., 2010, 45(3/4/5/6):688-690.[8] Benoit D, Garcia P, Vaille S M, et al. Real-time fibered optically stimulated luminescence dosimeter based on SrS:Ce,Sm phosphor [J]. IEEE Tans. Nucl. Sci., 2008. 55(4):2154-2160.[9] Nanto H, Hirai Y, Ikeda M, et al. A novel image storage sensor using photostimulated luminescence in SrS:Eu, Sm phosphor for electromagnetic waves such as X-rays, UV-rays and visible light [J]. Sensors and Actuators A:Physical, 1996. 53(1):223-226.[10] Sun Y R, Chen Z Y, Fan Y W, et al. A CaS:Ce,Sm-based dosimeter for online dosimetry measurement [J]. Nucl. Sci. Technol., 2011. 22(2):84-88.[11] Yoo S H, Kim C K. Nanocomposite encapsulation of CuS:Eu light-emitting diode phosphors for the enhancement of the stability against moisture [J]. J. Electrochem. Soc., 2009, 156(7):J170-J173.[12] Avci N, Musschoot J, Smet P F, et al. Microencapsulation of moisture-sensitive CaS:Eu2+ particles with aluminum oxide [J]. J. Electrochem. Soc., 2009, 156(11):J333-J337.[13] Gang S R, Kim D, Kim S M, et al. Improvement in the moisture stability of CaS:Eu phosphor applied in light-emitting diodes by titania surface coating [J]. Microelectron. Reliab., 2012, 52(9/10):2174-2179.[14] Kim C K, Yoo S H. Changes in the moisture stability of CaS:Eu2+ phosphors with surface coating methods [J]. Macromol. Res., 2009, 17(11):907-911.[15] Guo C F, Chu B L, Wu M M, et al. Oxide coating for alkaline earth sulfide based phosphor [J]. J. Lumin., 2003, 105(2/3/4):121-126.[16] Guo, C, Chu B, Su Q. Improving the stability of alkaline earth sulfide-based phosphors [J]. Appl. Surf. Sci., 2004, 225(1):198-203.[17] Chao, L, Chao Z, Yan D, et al. Improving thermal stability of BaMgAl10O17:Eu Phosphor [J]. J. Rare Earths, 2006, 24(1):153-156.[18] Wu J P, Newman D, Viney I V F. Study on relationship of luminescence in CaS:Eu,Sm and dopants concentration [J]. J. Lumin., 2002, 99(3):237-245.[19] Sharma G, Lochab S P, Singh N. Luminescence properties of CaS:Ce, Sm nanophosphors [J]. Physica B, 2011, 406(10):2013-2017.[20] Guo, C, Luan L, Huang D, et al. Study on the stability of phosphor SrAl2O4:Eu2+, Dy3+ in water and method to improve its moisture resistance [J]. Mater. Chem. Phys., 2007, 106(2/3):268-272.[21] Tillotson T, Hrubesh L, Simpson R, et al. Sol-gel processing of energetic materials [J]. J. Non-Cryst. Solids, 1998, 225:358-363.

浏览量

下载量

CSCD

文章被引用时，请邮件提醒。

提交

工具集

关联资源

ZnO：（Al，Sm）阻挡层薄膜的制备及其光电性能

金红石型TiO₂/ZnTiO₃复合材料的制备及其光催化性能