Down-conversion process in Tb 3+Yb 3+ co-doped Calibo glasses

I. A.A. Terra; L. J. Borrero-González; T. R. Figueredo; J. M.P. Almeida; A. C. Hernandes; L. A.O. Nunes; O. L. Malta

doi:10.1016/j.jlumin.2012.02.019

Down-conversion process in Tb ³⁺Yb ³⁺ co-doped Calibo glasses

I. A.A. Terra, L. J. Borrero-González, T. R. Figueredo, J. M.P. Almeida, A. C. Hernandes, L. A.O. Nunes, O. L. Malta

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Resumen

The down-conversion process in Tb ³⁺Yb ³⁺ co-doped Calibo glasses was studied. The emission, excitation and time-resolved measurements indicated the existence of an energy conversion through the excitation of Tb ³⁺ ions to near-infrared emission by Yb ³⁺ ions. The emission intensity dependence on excitation power confirms that the one-photon process is responsible for the Yb ³⁺ emission. An enhanced Yb ³⁺ emission was observed with Yb ³⁺ doping and an optimal energy transfer efficiency of 32% was obtained before reaching near-infrared emission quenching. The mechanism of the non-resonant energy transfer from Tb ³⁺ to Yb ³⁺ is discussed in terms of the Tb ³⁺Yb ³⁺ cross-relaxation and multiphonon decay processes.

Idioma original	Inglés
Páginas (desde-hasta)	1678-1682
Número de páginas	5
Publicación	Journal of Luminescence
Volumen	132
N.º	7
DOI	https://doi.org/10.1016/j.jlumin.2012.02.019
Estado	Publicada - jul. 2012
Publicado de forma externa	Sí

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title = "Down-conversion process in Tb 3+Yb 3+ co-doped Calibo glasses",

abstract = "The down-conversion process in Tb 3+Yb 3+ co-doped Calibo glasses was studied. The emission, excitation and time-resolved measurements indicated the existence of an energy conversion through the excitation of Tb 3+ ions to near-infrared emission by Yb 3+ ions. The emission intensity dependence on excitation power confirms that the one-photon process is responsible for the Yb 3+ emission. An enhanced Yb 3+ emission was observed with Yb 3+ doping and an optimal energy transfer efficiency of 32% was obtained before reaching near-infrared emission quenching. The mechanism of the non-resonant energy transfer from Tb 3+ to Yb 3+ is discussed in terms of the Tb 3+Yb 3+ cross-relaxation and multiphonon decay processes.",

keywords = "Calibo, Down-conversion, Energy transfer, Tb Yb ions",

author = "Terra, {I. A.A.} and Borrero-Gonz{\'a}lez, {L. J.} and Figueredo, {T. R.} and Almeida, {J. M.P.} and Hernandes, {A. C.} and Nunes, {L. A.O.} and Malta, {O. L.}",

year = "2012",

month = jul,

doi = "10.1016/j.jlumin.2012.02.019",

language = "English",

volume = "132",

pages = "1678--1682",

journal = "Journal of Luminescence",

issn = "0022-2313",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Down-conversion process in Tb 3+Yb 3+ co-doped Calibo glasses

AU - Terra, I. A.A.

AU - Borrero-González, L. J.

AU - Figueredo, T. R.

AU - Almeida, J. M.P.

AU - Hernandes, A. C.

AU - Nunes, L. A.O.

AU - Malta, O. L.

PY - 2012/7

Y1 - 2012/7

N2 - The down-conversion process in Tb 3+Yb 3+ co-doped Calibo glasses was studied. The emission, excitation and time-resolved measurements indicated the existence of an energy conversion through the excitation of Tb 3+ ions to near-infrared emission by Yb 3+ ions. The emission intensity dependence on excitation power confirms that the one-photon process is responsible for the Yb 3+ emission. An enhanced Yb 3+ emission was observed with Yb 3+ doping and an optimal energy transfer efficiency of 32% was obtained before reaching near-infrared emission quenching. The mechanism of the non-resonant energy transfer from Tb 3+ to Yb 3+ is discussed in terms of the Tb 3+Yb 3+ cross-relaxation and multiphonon decay processes.

AB - The down-conversion process in Tb 3+Yb 3+ co-doped Calibo glasses was studied. The emission, excitation and time-resolved measurements indicated the existence of an energy conversion through the excitation of Tb 3+ ions to near-infrared emission by Yb 3+ ions. The emission intensity dependence on excitation power confirms that the one-photon process is responsible for the Yb 3+ emission. An enhanced Yb 3+ emission was observed with Yb 3+ doping and an optimal energy transfer efficiency of 32% was obtained before reaching near-infrared emission quenching. The mechanism of the non-resonant energy transfer from Tb 3+ to Yb 3+ is discussed in terms of the Tb 3+Yb 3+ cross-relaxation and multiphonon decay processes.

KW - Calibo

KW - Down-conversion

KW - Energy transfer

KW - Tb Yb ions

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U2 - 10.1016/j.jlumin.2012.02.019

DO - 10.1016/j.jlumin.2012.02.019

M3 - Article

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SN - 0022-2313

VL - 132

SP - 1678

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JO - Journal of Luminescence

JF - Journal of Luminescence

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