TY - JOUR
T1 - Gold-assisted enhancement of the luminescence of Mn2+ ions induced by silicon in phosphate glass
AU - Jiménez, José A.
AU - Smith, Stephon
N1 - Publisher Copyright:
© 2020 Elsevier B.V.
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2020/10/30
Y1 - 2020/10/30
N2 - This Letter reports the first investigation on the influence of gold on the photoluminescence (PL) of Mn2+ ions in phosphate glass incorporated via silicon. The glasses were prepared by melting and characterized by X-ray diffraction, optical absorption, and PL spectroscopy with decay dynamics and time-resolved assessment. While silicon-induced defects produced a new Mn2+ excitation band around 255 nm, gold co-doping augmented it. By exciting Si-defects at 255 nm, sensitized Mn2+ PL around 640 nm was observed, which was enhanced by gold. Resonantly-excited at 360 nm, the Mn2+ PL dynamics was analyzed in the context of a bi-exponential decay in connection with interacting and isolated Mn2+ ions. Further, a third fast component became prominently manifested with gold under 255 nm excitation. From time-resolved spectra, it was suggested to be linked to the influence of Au particles on luminescent defects.
AB - This Letter reports the first investigation on the influence of gold on the photoluminescence (PL) of Mn2+ ions in phosphate glass incorporated via silicon. The glasses were prepared by melting and characterized by X-ray diffraction, optical absorption, and PL spectroscopy with decay dynamics and time-resolved assessment. While silicon-induced defects produced a new Mn2+ excitation band around 255 nm, gold co-doping augmented it. By exciting Si-defects at 255 nm, sensitized Mn2+ PL around 640 nm was observed, which was enhanced by gold. Resonantly-excited at 360 nm, the Mn2+ PL dynamics was analyzed in the context of a bi-exponential decay in connection with interacting and isolated Mn2+ ions. Further, a third fast component became prominently manifested with gold under 255 nm excitation. From time-resolved spectra, it was suggested to be linked to the influence of Au particles on luminescent defects.
KW - Glasses
KW - Luminescence
KW - Nanoparticles
KW - Optical properties
KW - Plasmonics
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U2 - 10.1016/j.physleta.2020.126776
DO - 10.1016/j.physleta.2020.126776
M3 - Article
AN - SCOPUS:85089195448
SN - 0375-9601
VL - 384
JO - Physics Letters, Section A: General, Atomic and Solid State Physics
JF - Physics Letters, Section A: General, Atomic and Solid State Physics
IS - 30
M1 - 126776
ER -