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Ag-sensitized Tb3+/...
Ag-sensitized Tb3+/Yb3+ codoped silica-zirconia glasses and glass-ceramics : systematic and detailed investigation of the broadband energy-transfer and downconversion processes
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- Enrichi, Francesco (author)
- CNR-ISP, Institute of Polar Sciences, National Research Council, Via Torino 155, 30172 Mestre-Venezia, Italy. Department of Molecular Sciences and Nanosystems, Ca’ Foscari University of Venice, Via Torino 155, 30172 Mestre-Venezia, Italy
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- Cattaruzza, Elti (author)
- Department of Molecular Sciences and Nanosystems, Ca’ Foscari University of Venice, Via Torino 155, 30172 Mestre-Venezia, Italy
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- Riello, Pietro (author)
- Department of Molecular Sciences and Nanosystems, Ca’ Foscari University of Venice, Via Torino 155, 30172 Mestre-Venezia, Italy
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- Righini, Giancarlo C. (author)
- CNR-IFAC, Nello Carrara Institute of Applied Physics, National Research Council, Via Madonna del Piano 10, 50019 Sesto Fiorentino, Firenze, Italy
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- Vomiero, Alberto (author)
- Luleå tekniska universitet,Materialvetenskap,Department of Molecular Sciences and Nanosystems, Ca’ Foscari University of Venice, Via Torino 155, 30172 Mestre-Venezia, Italy
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CNR-ISP, Institute of Polar Sciences, National Research Council, Via Torino 155, 30172 Mestre-Venezia, Italy Department of Molecular Sciences and Nanosystems, Ca’ Foscari University of Venice, Via Torino 155, 30172 Mestre-Venezia, Italy Department of Molecular Sciences and Nanosystems, Ca’ Foscari University of Venice, Via Torino 155, 30172 Mestre-Venezia, Italy (creator_code:org_t)
- Elsevier, 2021
- 2021
- English.
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In: Ceramics International. - : Elsevier. - 0272-8842 .- 1873-3956. ; 47:13, s. 17939-17949
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Abstract
Subject headings
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- Various studies report that Tb3+/Yb3+ co-doped materials can split one UV or 488 nm (visible) photon in two near infrared (NIR) photons at 980 nm by an energy-transfer process involving one Tb3+ and two Yb3+ ions. Additionally, it was demonstrated that Ag multimers can provide an efficient optical sensitizing effect for rare earth ions (RE3+ ions), resulting in a broadband enhanced excitation, which could have a significant technological impact, overcoming their limited spectral absorptions and small excitation cross sections. However, a systematic and detailed investigation of the down-conversion process enhanced by Ag nanoaggregates is still lacking, which is the focus of this paper. Specifically, a step by step analysis of the energy-transfer quantum-cutting chain in Ag-exchanged Tb3+/Yb3+ co-doped glasses and glass-ceramics is presented. Moreover, the direct Ag-Yb3+ energy-transfer is also considered. Results of structural, compositional, and optical characterizations are given, providing quantitative data for the efficient broadband Ag-sensitization of Tb3+/Yb3+ quantum cutting. A deeper understanding of the physical processes beneath the optical properties of the developed materials will allow a wiser realization of more efficient energy-related devices, such as spectral converters for silicon solar cells and light-emitting devices (LEDs) in the visible and NIR spectral regions.
Subject headings
- NATURVETENSKAP -- Fysik -- Annan fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Other Physics Topics (hsv//eng)
Keyword
- Rare-earth ions
- Ag multimers
- Tb/Yb
- down-conversion
- glass-ceramics
- silica-zirconia
- Experimentell fysik
- Experimental Physics
Publication and Content Type
- ref (subject category)
- art (subject category)
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