Spectroscopic characterization of Er3+, Yb3+ co-doped UC single crystals : the influence of host and sensitizer concentrations

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RECERCAT Home > Universitat Politècnica de Catalunya > Tesines i projectes i treballs de final de carrera > View document

To access the full text documents, please follow this link: http://hdl.handle.net/2117/125494

dc.contributor	Universitat Politècnica de Catalunya. Departament de Física
dc.contributor	Bundesanstalt für Materialforschung und -prüfung
dc.contributor	Cojocaru, Crina
dc.contributor	Resch-Genger, Ute
dc.contributor	Würth, Christian
dc.contributor.author	Saleta Reig, David
dc.date	2018-10-24
dc.identifier.citation	ETSETB-230.137061
dc.identifier.uri	http://hdl.handle.net/2117/125494
dc.language.iso	eng
dc.publisher	Universitat Politècnica de Catalunya
dc.rights	S'autoritza la difusió de l'obra mitjançant la llicència Creative Commons o similar 'Reconeixement-NoComercial- SenseObraDerivada'
dc.rights	info:eu-repo/semantics/openAccess
dc.rights	http://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subject	Àrees temàtiques de la UPC::Enginyeria de la telecomunicació
dc.subject	Spectroscope
dc.subject	Lasers
dc.subject	Energy transfer
dc.subject	upconversion
dc.subject	luminescence
dc.subject	fluoride
dc.subject	single crystals
dc.subject	Er3+
dc.subject	Yb3+
dc.subject	Espectroscopis
dc.subject	Làsers
dc.title	Spectroscopic characterization of Er3+, Yb3+ co-doped UC single crystals : the influence of host and sensitizer concentrations
dc.type	info:eu-repo/semantics/masterThesis
dc.description.abstract	The energy transfer upconversion (ETU) mechanism is known to be the most efficient route for the conversion of near infrared (NIR) light to visible emission in Ln3+-co-doped systems. In this work, we examined these energy transfer (ET) processes in Yb3+,Er3+-co-doped fluoride single crystals. Because of their low phonon energy, high thermal dissipation, chemical stability and high transmission in the ultraviolet, visible, and NIR, these materials are ideal systems to study such processes. Here, we focus on the influence of the concentration of the sensitizer Yb3+ on the optical and upconversion properties of three different fluoride hosts doped with Yb3+ and Er3+ as a function of excitation power density and compare direct Ln3+-excitation and excitation in the NIR via ET.

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