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Tuning multicolor emission in AgNCs/Tm3+/Mn2+-doped fluorophosphate glasses

Fares, Hssen (author)
Universidade Estadual Paulista (UNESP),São Paulo State University (UNESP)
Castro, Tarcio (author)
Univerzita Karlova,Charles University
Franco, Douglas Faza (author)
Universidade Estadual Paulista (UNESP),São Paulo State University (UNESP)
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Fucikova, Anna (author)
Univerzita Karlova,Charles University
Rosa Da Silva, Robson, 1988 (author)
Chalmers tekniska högskola,Chalmers University of Technology
Valenta, Jan (author)
Univerzita Karlova,Charles University
Ribeiro, Sidney J.L. (author)
Universidade Estadual Paulista (UNESP),São Paulo State University (UNESP)
Nalin, Marcelo (author)
Universidade Estadual Paulista (UNESP),São Paulo State University (UNESP)
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 (creator_code:org_t)
Elsevier BV, 2020
2020
English.
In: Journal of Non-Crystalline Solids. - : Elsevier BV. - 0022-3093. ; 535
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  • Journal article (peer-reviewed)
Abstract Subject headings
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  • Herein we report the synthesis of highly-doped silver nanocluster in fluorophosphate glasses through the melting-quenching method in order to achieve sensitization with Tm3+ and Mn2+ ions. Blue and red emission belonging to Tm3+ (470 to 490 nm) and Mn2+ (550 to 750 nm) ions could be obtained via non-resonant excitation of Tm3+ and Mn2+. Slight decrease of the fluorescence decay times confirmed an energy transfer as a possible mechanism to explain the Tm3+ and Mn2+ emission. The composition of 5 mol% of AgNO3, 0.4 mol% of Tm2O3 and 0.2 mol% of MnF2 in our sample leads to distance between donor (silver nanoclusters) and acceptor (Tm3+-Mn2+) as short as 11 Å, which suggests that the main mechanism for blue and red emission from Tm3+ and Mn2+ is Förster Resonance Energy Transfer (FRET). The results presented here show that the studied material has potential application for multicolor generation as luminophore in white light emitting diodes (W-LED).

Subject headings

NATURVETENSKAP  -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
NATURVETENSKAP  -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences -- Condensed Matter Physics (hsv//eng)

Keyword

Visible emission
Multicomponent fluorophosphate glasses
Sensitization lanthanide and metal ions
Silver nanoclusters

Publication and Content Type

art (subject category)
ref (subject category)

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