Optical Properties of Multilayer BaTiO{sub 3}/SiO{sub 2} Film Structures Formed by the Sol–Gel Method

Journal Article · Fri Mar 15 04:00:00 EDT 2019 · Physics of the Solid State

DOI:https://doi.org/10.1134/S1063783419030120· OSTI ID:22925344

Kholov, P. A.; Sukalin, K. S. ^[1]; Raichenok, T. F.; Tikhomirov, S. A. ^[2]; Subasri, R.; Mudryi, A. V. ^[3]

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1. Belarusian State University of Informatics and Radioelectronics (Belarus)
2. Stepanov Institute of Physics of the National Academy of Sciences of Belarus (Belarus)
3. Scientific-Practical Materials Research Centre of the National Academy of Sciences of Belarus (Belarus)

Multi-layer film structures BaTiO{sub 3}/SiO{sub 2} with a thickness of ~1 μm containing up to 14 pairs of layers were synthesized by the sol–gel method with sequential heat treatment. It is shown that the synthesized structures are X-ray amorphous. The formation of bands in the transmission and reflection spectra caused by interference effects is demonstrated. A more regular structure exhibits a photon band gap (opacity band) in the visible range with main minimum at 636 nm and corresponding maximum in the reflection spectra. Dispersion characteristics of barium titanate films with different concentrations of initial sols were studied and an increase in the refractive index with an increase in the concentration of sol was demonstrated. For a sol with a concentration of 60 mg/mL, the refractive index in the spectral range of 390–1600 nm is 1.88–1.81. The prospects of sol–gel technology for the formation of BaTiO{sub 3}/SiO{sub 2} structures for nanophotonics and solar radiation converters are discussed.

• OSTI ID: 22925344
• Journal Information: Physics of the Solid State, Journal Name: Physics of the Solid State Journal Issue: 3 Vol. 61; ISSN 1063-7834
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BARIUM COMPOUNDS
CONCENTRATION RATIO
ENERGY CONVERSION
HEAT TREATMENTS
INTERFERENCE
LAYERS
OPACITY
PHOTONS
REFRACTIVE INDEX
SILICON OXIDES
SOL-GEL PROCESS
SOLAR RADIATION
SPECTRA
TITANATES
X RADIATION