Red to green upconversion in Er(3+)-doped BaTiO3 nanorods.

Alencar, Márcio A R C; Maciel, Glauco S; de Araújo, Cid B; Patra, Amitava

Alencar, Márcio A R C; Maciel, Glauco S; de Araújo, Cid B; Patra, Amitava.

Afiliação

Alencar MA; Departamento de Física, Universidade Federal de Alagoas, 57072-970, Maceió, AL, Brazil.

J Nanosci Nanotechnol ; 8(12): 6564-8, 2008 Dec.

Article em En | MEDLINE | ID: mdl-19205241

RESUMO

We investigated the frequency upconversion (UC) process in BaTiO3:Er3+ nanocrystals for excitation wavelengths in the range 638 to 660 nm. Green upconversion emissions at 526 and 547 nm corresponding to 2H11/2 --> 4I15/2 and 4S3/2 --> 4I15/2 to transitions of the Er3+ were observed. The excitation spectrum for UC emissions presented three bands, due to ground state and excited state absorption of Er3+ ions. The UC intensity as a function of the laser power was investigated and it was found this a two-photon absorption process.

Buscar no Google

Adicionar na Minha BVS

Imprimir

XML

PubMed Links

Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: J Nanosci Nanotechnol Ano de publicação: 2008 Tipo de documento: Article País de afiliação: Brasil País de publicação: Estados Unidos

Buscar no Google

Adicionar na Minha BVS

Imprimir

XML

PubMed Links