Optical transmittance spectra of insulator nanoparticles in bulk heterocomposites

Journal Article · Sun Mar 15 04:00:00 EDT 2009 · Semiconductors

DOI:https://doi.org/10.1134/S1063782609030130· OSTI ID:21260404

Shcherbakov, A V ^[1]

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1. Russian Academy of Sciences, Institute of Automation and Control Processes, Far East Division (Russian Federation)

A theoretical model is presented of the visible, near-infrared, and near-ultraviolet transmittance spectra of arbitrarily-shaped small-sized insulator particles embedded in an insulator in relation to the particle dimensions and the radiation frequency. The model is based on a number of assumptions. In the band gap of the nanoparticles, there are allowed energy bands produced by surface defects. Two-particle states (electron-hole pairs) are only slightly confined, and the size-quantized states of charge carriers are formed in the conduction band; the states depend on the shape and dimensions of the nanoparticles. By the example of Al{sub 2}O{sub 3} nanoparticles introduced into a liquid matrix of a transparent insulator, the results of experimental studies are compared with the theoretical model.

• OSTI ID: 21260404
• Journal Information: Semiconductors, Journal Name: Semiconductors Journal Issue: 3 Vol. 43; ISSN SMICES; ISSN 1063-7826
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM OXIDES
CHARGE CARRIERS
DEFECTS
HOLES
LIQUIDS
NANOSTRUCTURES
PARTICLES
SPECTRA
SURFACES
ULTRAVIOLET RADIATION