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- Title
The influence of a thin gold film on the optical spectral characteristics of a porous anodic aluminum-oxide membrane.
- Authors
Ushakov, N.; Vasilkov, M.; Fedorov, F.
- Abstract
We have experimentally studied how a thin mesostructured gold film, deposited onto one side of a porous anodic aluminum-oxide membrane, influences its optical spectral characteristics in a 200-900 nm wavelength range. It is established that the gold film only modifies the spectral characteristics of the composite membrane at light wavelengths above 500 nm. The presence of a thin gold film ensures the surface conductivity of membrane on a level of 3.4 × 10 Ω m, retains optical transparency within 10-20%, leads to the appearance of anomalous dispersion in the long-wavelength part of the transmission spectrum, and reduces the bandgap width from 5.61 eV (in anodic aluminum oxide) to 4.51 eV (in the composite). The obtained anodic aluminum-oxide membranes with thin gold films can be used as transparent conducting electrodes in optoelectronic devices with large light transmitter/receiver active areas.
- Subjects
GOLD films; OPTICAL spectra; ALUMINUM oxide; POROUS materials; TRANSPARENCY (Optics)
- Publication
Technical Physics Letters, 2017, Vol 43, Issue 7, p648
- ISSN
1063-7850
- Publication type
Article
- DOI
10.1134/S1063785017070276