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Silver doping of silica-hafnia waveguides containing Tb3+/Yb3+ rare earths for downconversion in PV solar cells
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.
CNR-IFN, Istituto di Fotonica e Nanotecnologie, CSMFO Lab. & FBK-CMM.
Dipartimento di Scienze Molecolari e Nanosistemi, Università Ca’ Foscari Venezia.
Meridionale Impianti SpA.
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Number of Authors: 10
2016 (English)In: Optical materials (Amsterdam), ISSN 0925-3467, E-ISSN 1873-1252, Vol. 60, 264-269 p.Article in journal (Refereed) Published
Abstract [en]

The aim of this paper is to study the possibility to obtain an efficient downconverting waveguide which combines the quantum cutting properties of Tb3+/Yb3+ codoped materials with the optical sensitizing effects provided by silver doping. The preparation of 70SiO(2)-30HfO(2) glass and glass-ceramic waveguides by sol-gel route, followed by Ag doping by immersion in molten salt bath is reported. The films were subsequently annealed in air to induce the migration and/or aggregation of the metal ions. Results of compositional and optical characterization are given, providing evidence for the successful introduction of Ag in the films, while the photoluminescence emission is strongly dependent on the annealing conditions. These films could find potential applications as downshifting layers to increase the efficiency of PV solar cells

Place, publisher, year, edition, pages
2016. Vol. 60, 264-269 p.
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Experimental physics
URN: urn:nbn:se:ltu:diva-60681DOI: 10.1016/j.optmat.2016.07.048ISI: 000386644500042OAI: diva2:1049553

Validerad; 2016; Nivå 2; 2016-11-25 (andbra)

Available from: 2016-11-25 Created: 2016-11-25 Last updated: 2016-11-25Bibliographically approved

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Enrichi, Francesco
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