Increased luminescence and improved decay kinetics in lithium and cerium co-doped yttrium aluminum garnet scintillators grown by the Czochralski method

Dickens, Peter T.; Haven, Drew T.; Friedrich, Stephan; Saleh, Muad; Lynn, Kelvin G.

doi:10.1063/1.4978376

Title: Increased luminescence and improved decay kinetics in lithium and cerium co-doped yttrium aluminum garnet scintillators grown by the Czochralski method

Abstract

In this study, four yttrium aluminum garnet single crystals co-doped with cerium and lithium were produced by the Czochralski method and the scintillation and defect properties were investigated. Our results demonstrated an increase in luminescence with Li co-doping as well as elimination of longer decay times. Surprisingly, although Li is monovalent, no oxidation of cerium from Ce³⁺ to Ce⁴⁺ was found as would be expected to maintain charge neutrality. Additionally, thermoluminescence results indicated a reduction in the trapping of charge carriers by shallow and deep traps, and room temperature photoluminescence measurements showed an improvement in the Ce³⁺ 5d to 4f transition efficiency.

Authors:

Dickens, Peter T. ^[1]; Haven, Drew T. ^[1]; Friedrich, Stephan ^[2]; Saleh, Muad ^[1];

^[1]

Washington State Univ., Pullman, WA (United States). Center for Materials Research
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

Publication Date:: Fri Mar 24 00:00:00 EDT 2017

Research Org.:: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

Sponsoring Org.:: USDOE National Nuclear Security Administration (NNSA)

OSTI Identifier:: 1463012

Alternate Identifier(s):: OSTI ID: 1349377

Report Number(s):: LLNL-JRNL-737550
Journal ID: ISSN 0021-8979; 889897; TRN: US1902248

Grant/Contract Number:: AC52-07NA27344

Resource Type:: Accepted Manuscript

Journal Name:: Journal of Applied Physics

Additional Journal Information:: Journal Volume: 121; Journal Issue: 12; Journal ID: ISSN 0021-8979

Publisher:: American Institute of Physics (AIP)

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE

Citation Formats


                    Dickens, Peter T., Haven, Drew T., Friedrich, Stephan, Saleh, Muad, and Lynn, Kelvin G. Increased luminescence and improved decay kinetics in lithium and cerium co-doped yttrium aluminum garnet scintillators grown by the Czochralski method.  United States: N. p., 2017. 
Web.  doi:10.1063/1.4978376.

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                    Dickens, Peter T., Haven, Drew T., Friedrich, Stephan, Saleh, Muad, & Lynn, Kelvin G. Increased luminescence and improved decay kinetics in lithium and cerium co-doped yttrium aluminum garnet scintillators grown by the Czochralski method.  United States.  https://doi.org/10.1063/1.4978376

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                    Dickens, Peter T., Haven, Drew T., Friedrich, Stephan, Saleh, Muad, and Lynn, Kelvin G. Fri .  
"Increased luminescence and improved decay kinetics in lithium and cerium co-doped yttrium aluminum garnet scintillators grown by the Czochralski method".  United States.  https://doi.org/10.1063/1.4978376.  https://www.osti.gov/servlets/purl/1463012.

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@article{osti_1463012,

  title        = {Increased luminescence and improved decay kinetics in lithium and cerium co-doped yttrium aluminum garnet scintillators grown by the Czochralski method},

  author       = {Dickens, Peter T. and Haven, Drew T. and Friedrich, Stephan and Saleh, Muad and Lynn, Kelvin G.},

  abstractNote = {In this study, four yttrium aluminum garnet single crystals co-doped with cerium and lithium were produced by the Czochralski method and the scintillation and defect properties were investigated. Our results demonstrated an increase in luminescence with Li co-doping as well as elimination of longer decay times. Surprisingly, although Li is monovalent, no oxidation of cerium from Ce3+ to Ce4+ was found as would be expected to maintain charge neutrality. Additionally, thermoluminescence results indicated a reduction in the trapping of charge carriers by shallow and deep traps, and room temperature photoluminescence measurements showed an improvement in the Ce3+ 5d to 4f transition efficiency.},

  doi          = {10.1063/1.4978376},

  journal      = {Journal of Applied Physics},

  number       = 12,

  volume       = 121,

  place        = {United States},

  year         = {Fri Mar 24 00:00:00 EDT 2017},

  month        = {Fri Mar 24 00:00:00 EDT 2017}

}

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Title: Increased luminescence and improved decay kinetics in lithium and cerium co-doped yttrium aluminum garnet scintillators grown by the Czochralski method

Abstract

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