Optical properties of Mg0.05Zn0.95O/SiO2 nanocomposite films prepared by sol-gel technique
Creators
- 1. Indian Association for the Cultivation of Science, Department of Materials Science (India)
Description
Mg0.05Zn0.95O/SiO2 nanocomposite films in the molar ratio 25:75 consisting of Mg0.05Zn0.95O nanoparticles embedded in a dielectric matrix were prepared by sol-gel technique (spin coating). Optical transmittance, Raman effect and photoluminescence measurements of the composites indicated effective capping of the Mg0.05Zn0.95O nanoparticles (radii 1. 61-1.68 nm) in the host showing practically no variation of particle size with the post deposition annealing treatments. The blue shift of the band gap (4.29-4.23 eV) from that of bulk Mg0.05Zn0.95O indicated strong carrier confinement for samples annealed at T ≤ 873 K. Highly intense UV emission ( ∼ 4.14 eV) compared to that of defect related emission (2.59 eV) at room temperature was obtained by incorporating 5% Mg in ZnO
Additional details
Identifiers
Publishing Information
- Journal Title
- Journal of Nanoparticle Research
- Journal Volume
- 7
- Journal Issue
- 2-3
- Journal Page Range
- p. 195-201
- ISSN
- 1388-0764
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 39094520
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- ANNEALING; DEPOSITION; DIELECTRIC MATERIALS; EV RANGE 01-10; MAGNESIUM OXIDES; NANOSTRUCTURES; OPTICAL PROPERTIES; PARTICLE SIZE; PARTICLES; PHOTOLUMINESCENCE; RAMAN EFFECT; SILICON OXIDES; SOL-GEL PROCESS; TEMPERATURE RANGE 0273-0400 K; THIN FILMS; ZINC OXIDES
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; CHALCOGENIDES; EMISSION; ENERGY RANGE; EV RANGE; FILMS; HEAT TREATMENTS; LUMINESCENCE; MAGNESIUM COMPOUNDS; MATERIALS; OXIDES; OXYGEN COMPOUNDS; PHOTON EMISSION; PHYSICAL PROPERTIES; SILICON COMPOUNDS; SIZE; TEMPERATURE RANGE; ZINC COMPOUNDS
Optional Information
- Copyright
- Copyright (c) 2005 Springer