首页 > 论文 > 红外与毫米波学报 > 30卷 > 3期(pp:232-235)

掺杂浓度对BaF2:PbWO4闪烁晶体发光性能的影响

The influence of ion doping concentration on the luminescence properties of BaF2:PbWO4 crystals

  • 摘要
  • 论文信息
  • 参考文献
  • 被引情况
  • PDF全文
分享:

摘要

用多坩埚温度梯度系统生长了一批不同掺杂浓度的BaF2:PbWO4晶体,研究了这些晶体的透过光谱、x射线激发光谱(XEL)与晶体掺杂浓度的关系,结果发现合适浓度的掺杂增加了晶体的透过率、XEL光谱强度,并使XEL光谱峰红移.当掺杂浓度1000molppm浓度时,晶体的透过率明显增大、XEL光谱强度明显增强.当掺杂浓度达到2500~3000molppm左右时,透过率和x射线激发光谱强度有大幅度升高.BaF2浓度的继续增加到3500molppm浓度时,晶体透过率变化不大,但是XEL光谱强度降低,波峰加宽,继续增加掺杂浓度.掺杂浓度5000molppm时,波峰发生分裂,变成一个蓝光峰和绿光峰,蓝光峰很低,绿光波峰强,晶体光透过率降低.研究了这些现象发生的原因,发现晶体中V3+Pb缺陷和VO-缺陷、晶体[WO3F]-四面对闪烁发光的增强作用和间隙钡,间隙氧以及[WO2F2]四面体对闪烁发光的减弱作用与这些现象密切相关.

Abstract

A batch of BaF2:PbWO4 crystals are grown up by a multicrucible temperature gradient system. The transmittance and xray exciting luminescence (XEL) spectra of these crystals were studied. The results reveal that these scintillation properties are strikingly effected by the doped BaF2 content in the crystals. Proper BaF2 content in the crystal could improve the transmittance and the XEL peak intensity and make the XEL peaks shift to longer wavelength. For the crystal grown up from the melt with BaF2 1000molppm, this raising extent becomes evident for their transmittance and the XEL peak intensity. For the crystal grown up from the melt with BaF2 2500~3000molppm, their transmittance and XEL peak intensity raise greatly. For the crystal grown up from BaF2 3500molppm, there is no evidence change for the transmittance, but its blue XEL peak intensity becomes weak and the peak width enlarged. For the crystal grown up from the melt with BaF2 5000molppm, the blue peak intensity becomes low while the green peak intensity becomes strong. The enhancingeffect of V3+Pb and VO- and [WO3F]- tetrahedron and the weakeningeffect of O·i ,Ba¨i and [WO2F2] tetrahedron are related to the phenomena.

Newport宣传-MKS新实验室计划
补充资料

中图分类号:TN213

基金项目:浙江国际合作重大攻关项目(2006C14029);浙江自然基金资助项目(Y105459)

收稿日期:2010-12-21

修改稿日期:2011-03-18

网络出版日期:--

作者单位    点击查看

万尤宝:嘉兴学院机电工程学院,嘉兴学院先进材料研究所,浙江 嘉兴314001云南师范大学,可再生能源材料先进技术与制备教育部重点实验室,云南 昆明650092
吴宇容:嘉兴学院机电工程学院,嘉兴学院先进材料研究所,浙江 嘉兴314001
张建新:嘉兴学院机电工程学院,嘉兴学院先进材料研究所,浙江 嘉兴314001
杨培志:云南师范大学,可再生能源材料先进技术与制备教育部重点实验室,云南 昆明650092
肖林荣:嘉兴学院机电工程学院,嘉兴学院先进材料研究所,浙江 嘉兴314001
杨辉:浙江大学材料与化工学院,无机材料研究所,浙江 杭州300200

联系人作者:万尤宝(youbaowan@yahoo.com.cn)

备注:万尤宝(1970),男,湖北红安人, 嘉兴学院副教授,研究方向光电子材料与器件

【1】Musienko Y. The CMS electromagnetic calorimeter[J]. Instr.Meth A,2002,494:308—312.

【2】Lecoq P. Ten years of lead tungstate development[J]. Instr.Meth A: Accelerators, Spectrometers, Detectors and Associated Equipment,2005,537(1~2):15—21 .

【3】SHAO Jun, MA LiLi, LU Xiang, et al, RECENT PROGRESS AND POTENTIAL IMPACT OF MODULATION SPECTROSCOPY FOR NARROWGAP HgCdTe[J]. J. Infrared Millim. Waves(邵军,马丽丽,吕翔,等.窄禁带碲镉汞调制光谱的近期研究进展和前景.红外与毫米波学报),2008,27(2):1—6.

【4】WAN YouBao, WU RuRong, ZHANG JianXin, et al. The Influence of Ions Doped Concentration on the Scintillation Optical properties of BaF2:PbWO4 Crystals[J]. J. Infrared Millim. Waves(万尤宝, 吴宇容,张建新,等.掺杂钨酸铅闪烁晶体的闪烁光学性质研究.红外与毫米波学报),2009,28(4):263—266.

【5】SHAN Xiaguisi, The Application of PWO on PET[C]. Proceeding on Bilateral Symposium Digest for Phonic Science and Industry,Hangzhou,China,2000,20—25.

【6】YANG Peizhi., Growth of largesize crystal of PbWO4 by vertical Bridgman method with multicrucibles[J]. J. Cryst. Growth,2002,236(4):589—595.

【7】WAN youbao, The multicrucible system for crystal growth[P]. CN 200610148319.4, (万尤宝,多坩埚温梯法晶体生长系统,CN 200610148319.4)

【8】Moreau J M, Structural characterization of PbWO4 and related new phase Pb7W8O32x [J]. J. All. and Comp.,1996,238:46—48.

【9】Williams R T, Zhang Y C, Abraham Y, et al, The Spectrum Character of PWO crystal[J]. Proceedings on ICISA15th,2000,118.

【10】Ye Chongzhi, Liao Jingying, et al. Growth and scintillation properties of F doped PbWO4 crystals[J]. Nucl. Instr. Meth. A.2006,566:757.

引用该论文

WAN YouBao,WU YuRong,ZHANG JianXin,YANG PeiZhi,XIAO LinRong,YANG Hui. The influence of ion doping concentration on the luminescence properties of BaF2:PbWO4 crystals[J]. Journal of Infrared and Millimeter Waves, 2011, 30(3): 232-235

万尤宝,吴宇容,张建新,杨培志,肖林荣,杨辉. 掺杂浓度对BaF2:PbWO4闪烁晶体发光性能的影响[J]. 红外与毫米波学报, 2011, 30(3): 232-235

您的浏览器不支持PDF插件,请使用最新的(Chrome/Fire Fox等)浏览器.或者您还可以点击此处下载该论文PDF