Structural disorder-dependent upconversion in Er3+/Yb3+-doped calcium titanate

Eduardo, Ariadne C.; Figueiredo, Alberthmeiry T. de; Li, Maximo Siu; Longo, Elson

Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/116474

Title:

Structural disorder-dependent upconversion in Er3+/Yb3+-doped calcium titanate

Author(s):

Institution:

Universidade Federal de Goiás (UFG)
Universidade de São Paulo (USP)
Universidade Estadual Paulista (UNESP)

ISSN:

0272-8842

Sponsorship:

FAPEG
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
INCTMN

Abstract:

In this work, we evaluated the photoluminescence of distinct Er/Yb-doped CaTiO3 powders prepared by the polymeric precursor method, i.e., the crystalline form (structurally ordered) and another form (structurally disordered) before structural order was reached. Upconversion luminescence and photoluminescence are correlated to structural order disorder. The CT:Er,Yb material presents broad-band emission under UV irradiation and green upconversion luminescence under IR irradiation. (C) 2014 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

Issue Date:

1-Dec-2014

Citation:

Ceramics International. Oxford: Elsevier Sci Ltd, v. 40, n. 10, p. 15981-15984, 2014.

Time Duration:

15981-15984

Publisher:

Elsevier B.V.

Keywords:

Titanate
Upconversion
Order disorder effect
Photoluminescence

Source:

http://dx.doi.org/10.1016/j.ceramint.2014.07.127

URI:

Access Rights:

Acesso restrito

Type:

outro

Source:

http://repositorio.unesp.br/handle/11449/116474

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