Luminescence and energy transfer in Lu3Al5O12 scintillators co-doped with Ce3+ and Pr3+

被引：53

作者：

Ogieglo, J. M. ^{[1
]}

Zych, A. ^{[1
]}

Juestel, T. ^{[2
]}

Meijerink, A. ^{[1
]}

Ronda, C. R. ^{[1
,3
,4
]}

机构：

[1] Univ Utrecht, CMI, Debye Inst Nanomat Sci, NL-3508 TA Utrecht, Netherlands

[2] Univ Appl Sci Munster, D-48565 Steinfurt, Germany

[3] Philips Res Europe Eindhoven, NL-5656 AE Eindhoven, Netherlands

[4] Zhejiang Univ, Ctr Opt & Electromagnet Res, Hangzhou 310058, Zhejiang, Peoples R China

来源：

OPTICAL MATERIALS | 2013年 / 35卷 / 03期

关键词：

Computed tomography; Scintillator; Energy transfer; Garnet; Zero-phonon line; Self Trapped Exciton; INORGANIC SCINTILLATORS; TEMPERATURE-DEPENDENCE; SPECTROSCOPY; DEFECTS; GAP;

D O I：

10.1016/j.optmat.2012.08.010

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Lu3Al5O12:Ce3+ (LuAG:Ce) is a scintillator with a fast response time. The light yield is lower than theoretically expected and to increase the light yield co-doping with Pr3+ is investigated. To better understand the energy flow to the Ce3+ ion, first low temperature emission and excitation spectra of Pr3+ doped LuAG were investigated, allowing the accurate determination of the zero-phonon lines for the 5d states of Pr3+ in LuAG and the temperature dependent energy transfer from the Self Trapped Exciton to Pr3+. In addition VUV excitation and soft X-ray excited emission spectra of the co-doped LuAG:Ce,Pr were studied. The results show that energy transfer from Pr3+ to Ce3+ occurs but it is followed by back transfer to the 4f states of Pr3+. (c) 2012 Published by Elsevier B.V.

引用

页码：322 / 331

页数：10

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