Emerging blue‐UV luminescence in cerium doped YAG nanocrystals | Zendy

Shirmane Liana | Zendy; Pankratov Vladimir | Zendy

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Emerging blue‐UV luminescence in cerium doped YAG nanocrystals

Author(s) -

Shirmane Liana,

Pankratov Vladimir

Publication year - 2016

Publication title -

physica status solidi (rrl) – rapid research letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.786

H-Index - 68

eISSN - 1862-6270

pISSN - 1862-6254

DOI - 10.1002/pssr.201600041

Subject(s) - luminescence , cerium , excited state , materials science , ultraviolet , nanocrystal , doping , persistent luminescence , excitation , emission spectrum , analytical chemistry (journal) , spectroscopy , photochemistry , optoelectronics , spectral line , chemistry , atomic physics , nanotechnology , physics , thermoluminescence , quantum mechanics , astronomy , chromatography , metallurgy

Time‐resolved luminescence properties of Ce 3+ doped Y 3 Al 5 O 12 (YAG) nanocrystals have been studied by means of vacuum‐ultraviolet excitation spectroscopy. It was discovered that additionally to the regular Ce 3+ yellow‐green emission which is well‐known luminescence in YAG, new emission covering a broad spectral range from 2.7 eV to 3.5 eV was revealed in the luminescence spectra for all YAG:Ce nanocrystals studied. This blue‐UV emission has fast decay time about 7 ns as well as intensive well‐resolved excitation band peaking at 5.9 eV and, in contrast to green Ce 3+ emission, practically is not excited at higher energies. The origin of the blue‐UV emission is tentatively suggested and discussed. (© 2016 WILEY‐VCH Verlag GmbH &Co. KGaA, Weinheim)

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