Tuning multicolor emission in AgNCs/Tm3+/Mn2+-doped fluorophosphate glasses
Journal article, 2020

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).

Visible emission

Multicomponent fluorophosphate glasses

Sensitization lanthanide and metal ions

Silver nanoclusters


Hssen Fares

São Paulo State University (UNESP)

Tarcio Castro

Charles University

Douglas Faza Franco

São Paulo State University (UNESP)

Anna Fucikova

Charles University

Robson Rosa Da Silva

Chalmers, Chemistry and Chemical Engineering, Applied Chemistry

Jan Valenta

Charles University

Sidney J.L. Ribeiro

São Paulo State University (UNESP)

Marcelo Nalin

São Paulo State University (UNESP)

Journal of Non-Crystalline Solids

0022-3093 (ISSN)

Vol. 535 119968

Subject Categories

Atom and Molecular Physics and Optics

Condensed Matter Physics



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