Epitaxial growth of Ce-doped (Pb,Gd)3(Al,Ga)5O12 films and their optical and scintillation properties

Dmitrii A. Vasil'ev, Dmitry A. Spassky, Shunsuke Kurosawa, Sergey I. Omelkov, Natalia V. Vasil'eva, Victor G. Plotnichenko, Andrey V. Khakhalin, Valery V. Voronov, Vladimir V. Kochurikhin

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Се-doped (Pb,Gd)3(Al,Ga)5O12 single crystalline garnet films were grown using liquid-phase epitaxy from four series of supercooled PbO–B2O3-based melt solutions on Gd3Ga5O12 and Gd3Al2.26Ga2.74O12 single crystal substrates. The optical and scintillation properties of the epitaxial garnet films were studied. The 5d-4f emission of Ce3+ ions within 450–650 nm was observed. The highest pulsed cathodoluminescence yield and scintillation yield values under 133Ba excitation for the Pb0.01Ce0.02Gd2.97Al3.13Ga1.87O12 film were 43,100 photons/MeV and 20,000 photons/MeV, respectively. The pulsed cathodoluminescence decay times of the film were 1.8 (1%), 24 (25%), and 60 ns (74%), and the scintillation decay times were 3.9 (7%) and 43.6 ns (93%). Because of the rapid decay and high light yield, Се-doped (Pb,Gd)3(Al,Ga)5O12 garnet films can be used in X-ray scintillators for different applications, such as homeland security.

Original languageEnglish
Pages (from-to)95-103
Number of pages9
JournalJournal of Science: Advanced Materials and Devices
Volume5
Issue number1
DOIs
Publication statusPublished - 2020 Mar

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Biomaterials
  • Materials Science (miscellaneous)

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