Optical spectroscopy of Nd3+ ions in a nanostructured glass matrix
- 1. Laboratorio de Novos Materiais Isolantes e Semicondutores (LNMIS), Instituto de Fisica, Universidade Federal de Uberlandia, 38400-902 Uberlandia-MG (Brazil)
- 2. Grupo de Espectroscopia de Materiais, Departamento de Fisica, Universidade Federal de Juiz de Fora, 36036-330 Juiz de Fora-MG (Brazil)
- 3. Centro Universitario Central Paulista, UNICEP, Sao Carlos, SP 13563-470 (Brazil)
- 4. Instituto de Fisica de Sao Carlos, USP, Sao Carlos, SP 13560-250 (Brazil)
Description
This paper presents the optical characterization of Nd3+ ions in nanostructured SiO2-Na2CO3-Al2O3-B2O3 (SNAB) CdS glass, synthesized by fusion. Radiative properties of the glass were determined by absorption, luminescence spectroscopy and lifetime measurements. Nd3+ emission enhancement and quenching were investigated in the presence of CdS nanocrystals. Nd3+-emission quenching was attributed to upconversion mechanisms and nonradiative processes such as multiphonon decay and energy transfer, while the Nd3+-emission enhancement was due to energy transfer from the CdS nanocrystals. Changes in the chemical environment around CdS nanocrystals were also confirmed by Judd-Ofelt calculations. - Highlights: → Nd3+-emission enhancement was due to energy transfer from the CdS nanocrystals. → Nd3+-emission quenching was due to upconversion, multiphonon decay and energy transfer. → Judd-Ofelt parameters were calculated considering the presence of CdS nanocrystals. → Changes in the chemical environment of Nd3+ ions around CdS nanocrystals were evidenced.
Availability note (English)
Available from http://dx.doi.org/10.1016/j.jlumin.2011.03.032Additional details
Identifiers
- DOI
- 10.1016/j.jlumin.2011.03.032;
- PII
- S0022-2313(11)00140-2;
Publishing Information
- Journal Title
- Journal of Luminescence
- Journal Volume
- 131
- Journal Issue
- 7
- Journal Page Range
- p. 1401-1406
- ISSN
- 0022-2313
- CODEN
- JLUMA8
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 42085649
- Subject category
- S77: NANOSCIENCE AND NANOTECHNOLOGY;
- Descriptors DEI
- ABSORPTION SPECTROSCOPY; ALUMINIUM OXIDES; BORON OXIDES; CADMIUM SULFIDES; DECAY; ENERGY TRANSFER; GLASS; LIFETIME; LUMINESCENCE; NANOSTRUCTURES; NEODYMIUM IONS; QUENCHING; SILICON OXIDES; SODIUM CARBONATES
- Descriptors DEC
- ALKALI METAL COMPOUNDS; ALUMINIUM COMPOUNDS; BORON COMPOUNDS; CADMIUM COMPOUNDS; CARBON COMPOUNDS; CARBONATES; CHALCOGENIDES; CHARGED PARTICLES; EMISSION; INORGANIC PHOSPHORS; IONS; OXIDES; OXYGEN COMPOUNDS; PHOSPHORS; PHOTON EMISSION; SILICON COMPOUNDS; SODIUM COMPOUNDS; SPECTROSCOPY; SULFIDES; SULFUR COMPOUNDS
Optional Information
- Copyright
- Copyright (c) 2011 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.