Optical properties of nanostructured lead sulfide films with a [D0.sub.3] cubic structure

Optical properties of nanostructured lead sulfide films with a [D0.sub.3] cubic structure

The optical transmittance of nanostructured cubic PbS (lead sulfide) films with a [D0.sub.3] structure is measured in the wavelength range 300 to 3200 nm. The film thicknesses are in the range ~120 to ~400 nm. Electron microscopy of the microstructure shows that about half of the films' particl...

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Bibliographic Details
Published in:Semiconductors (Woodbury, N.Y.) Vol. 45; no. 12; p. 1559
Main Authors: Sadovnikov, S.I, Kozhevnikova, N.S, Gusev, A.I
Format: Journal Article
Language:English
Published: Springer 01-12-2011
Subjects:
Analysis
Optical properties
Public television
Sulfides
Toy industry
Online Access:Get full text
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Summary:The optical transmittance of nanostructured cubic PbS (lead sulfide) films with a [D0.sub.3] structure is measured in the wavelength range 300 to 3200 nm. The film thicknesses are in the range ~120 to ~400 nm. Electron microscopy of the microstructure shows that about half of the films' particles are 60 nm or smaller in size. As the average particle size is decreased, the band gap [E.sub.g] increases from 0.85 to 1.5 eV, being noticeably larger than the band gap of coarse-grained PbS, 0.41 eV. This is indicative of a blue shift of the optical absorption band in nanostructured PbS films. DOI: 10.1134/S1063782611120116
ISSN:1063-7826
DOI:10.1134/S1063782611120116