The SiO2-HfO2 binary system is recognized as a promising candidate for Erbium-doped waveguides amplifiers fabrication. Recently, it was demonstrated that Er3+-activated 70SiO(2)-30HfO(2) planar waveguides with valuable optical and structural properties can be prepared by sol-gel technique with dipcoating processing. The important role played by hafnium in the silica network was evidenced by the particular spectroscopic properties presented by Er3+-ions in the silica-hafnia planar waveguides. In this work we present preliminary results on HfO2-SiO2 bulk xerogels doped with Eu3+ ions, with the aim to go inside the role of hafnium on the rare earth ions local environment. Spectroscopic measurements of the Eu3+ photoluminescence emission are given. Numerical simulations by the molecular dynamics method have been performed showing clearly a phase separation for the HfO2 richer samples. Moreover it is found than the rare earth-doping ions stay preferentially in hafnium rich domains, thus explaining why the rare earth spectroscopic properties are strongly modified. (c) 2008 Elsevier B.V. All rights reserved.

Relationship between structure and optical properties in rare earth-doped hafnium and silicon oxides: Modeling and spectroscopic measurements / Monteil, A; El-Jouad, M; Alombert-Goget, G; Chaussedent, S; Gaumer, N; Mahot, A; Chiasera, A; Jestin, Y; Ferrari, M. - In: JOURNAL OF NON-CRYSTALLINE SOLIDS. - ISSN 0022-3093. - 354:42-44(2008), pp. 4719-4722. [10.1016/j.jnoncrysol.2008.04.047]

Relationship between structure and optical properties in rare earth-doped hafnium and silicon oxides: Modeling and spectroscopic measurements

Chiasera A;
2008

Abstract

The SiO2-HfO2 binary system is recognized as a promising candidate for Erbium-doped waveguides amplifiers fabrication. Recently, it was demonstrated that Er3+-activated 70SiO(2)-30HfO(2) planar waveguides with valuable optical and structural properties can be prepared by sol-gel technique with dipcoating processing. The important role played by hafnium in the silica network was evidenced by the particular spectroscopic properties presented by Er3+-ions in the silica-hafnia planar waveguides. In this work we present preliminary results on HfO2-SiO2 bulk xerogels doped with Eu3+ ions, with the aim to go inside the role of hafnium on the rare earth ions local environment. Spectroscopic measurements of the Eu3+ photoluminescence emission are given. Numerical simulations by the molecular dynamics method have been performed showing clearly a phase separation for the HfO2 richer samples. Moreover it is found than the rare earth-doping ions stay preferentially in hafnium rich domains, thus explaining why the rare earth spectroscopic properties are strongly modified. (c) 2008 Elsevier B.V. All rights reserved.
42-44
Monteil, A; El-Jouad, M; Alombert-Goget, G; Chaussedent, S; Gaumer, N; Mahot, A; Chiasera, A; Jestin, Y; Ferrari, M
Relationship between structure and optical properties in rare earth-doped hafnium and silicon oxides: Modeling and spectroscopic measurements / Monteil, A; El-Jouad, M; Alombert-Goget, G; Chaussedent, S; Gaumer, N; Mahot, A; Chiasera, A; Jestin, Y; Ferrari, M. - In: JOURNAL OF NON-CRYSTALLINE SOLIDS. - ISSN 0022-3093. - 354:42-44(2008), pp. 4719-4722. [10.1016/j.jnoncrysol.2008.04.047]
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11572/343068
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? 16
social impact