Physical and chemical aspects of the study of clusters, nanostructures and nanomaterials
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Optical properties of amorphous thin films of sodium-tungsten oxide bronzes

B.M. Khubolov

Kabardino-Balkarian State University named after H.M. Berbekov

DOI: 10.26456/pcascnn/2021.13.430

Original article

Abstract: The spectral dependences were measured of the optical density of amorphous thin films of sodium-tungsten oxide bronze of the tetragonal structure and the composition Na0,3WO3, condensed on glass substrates, thermostated at temperatures of 373, 473 and 573K, as well as annealed in air vacuum, and electrochromically colored. The optical density D , which is proportional, as is known, to the absorption coefficient, was chosen as the studied optical characteristic. Spectral measurements of films deposited on substrates in the temperature range of 373, 473 and 573K showed the same type of spectral characteristics, with a peak of the exciton absorption in the near ultraviolet. The band of minimum absorption lies in the wavelength range of 400÷460 nm, while that of the impurity absorption is a wide band in the region of 650÷1000 nm with a maximum in the range of 900÷1000 nm. This spectral characteristic determines the blue-blue color of a thin film in transmission. The study of the optical properties of thin films of sodium-tungsten bronzes is an urgent problem.

Keywords: sodium tungsten bronze, thin film, monocrystal, electrochromic effect, optical density, spectral characteristics

  • Boris M. Khubolov – Ph. D., Leading Researcher, Scientific Research and Innovation Department, Head of the Laboratory of Electrochromic Materials, Department of Experimental and Theoretical Physics, Institute of Physics and Mathematics, Kabardino-Balkarian State University named after H.M. Berbekov

Reference:

Khubolov, B.M. Optical properties of amorphous thin films of sodium-tungsten oxide bronzes / B.M. Khubolov // Physical and chemical aspects of the study of clusters, nanostructures and nanomaterials. — 2021. — I. 13. — P. 430-438. DOI: 10.26456/pcascnn/2021.13.430. (In Russian).

Full article (in Russian): download PDF file

References:

1. Handbook of thin film technology, ed. by L.I. Maissel, R. Glang. New York, McGraw-Hill, 1970, 1200 p.
2. Khubolov B.M. Poluchenie i issledovanie opticheskikh svojstv kalij-vol'framovykh bronz geksagonal'noj struktury [Optical characteristics of thin films of potassium-tungsten bronzes], Fiziko-khimicheskie aspekty izucheniya klasterov, nanostruktur i nanomaterialov [Physical and chemical aspects of the study of clusters, nanostructures and nanomaterials], 2018, issue 10, P. 656-664. DOI: 10.26456/pcascnn/2018.10.656. (In Russian).
3. Khubolov B.M. Struktura i morfologiya amorfnykh tonkikh plenok oksidnykh natrij-vol'framovykh i kalij- vol'framovykh bronz [Structure and morphology of amorphous thin films of oxide sodium-tungsten and potassium- tungsten bronzes], Poverkhnost'. Rentgenovskie, sinkhrotronnye i nejtronnye issledovan [Journal of Surface Investigation: X-Ray, Synchrotron and Neutron Techniques], 2005, no. 6, pp. 78-84. (In Russian).
4. Kraevsky S.L., Evdokimova T.F., Solinov V.A., Shishmentseva E.V. Elektronnoionnye protsessy v elektrokhromnykh steklakh [Electron-ion processes in electrochromic glasses], Fizika i khimiya stekla [The Soviet Journal of Glass Physics and Chemistry], 1978, vol. 4, no. 3, pp. 326-330. (In Russian).
5. Sviridov D.T., Sviridova R.K., Smirnov Yu.F. Opticheskie spektry ionov perekhodnykh metallov v kristallakh [Optical spectra of transition metal ions in crystals]. Moscow, Nauka Publ., 1976, 267 p. (In Russian).
6. Faunen B.V., Krendell R.S. Elektrokhromnye displei na osnove WO3 [Electrochromic displays on the basis of WO3 ], Displays, ed. by Zh.M. Pankov. Moscow, Mir Publ., 1982, pp. 228-266 (In Russian).
7. Donnadieu A., Davazoglou D., Abdellaoui A. Structure, optical and electrooptical properties of polycrystalline WO3 and MO3 thin films prepared by chemical vapor deposition // Thin Solid Films, 1988, vol. 164, pp. P. 333- 338. DOI: 10.1016/0040-6090(88)90158-7.
8. Khubolov В.M., Khokonov Kh.В., Podlinov V.P. Issledovanie temperaturnoj zavisimosti provodimosti v tonkikh plenkakh natrijvol'framovykh bronz [Temperature dependence study of conductivity in thin films of sodium-tungsten bronze], Poverkhnost'. Rentgenovskie, sinkhrotronnye i nejtronnye issledovan [Journal of Surface Investigation: X-Ray, Synchrotron and Neutron Techniques], 2003, no. 2. pp. 88-93. (In Russian).
9. Fotiev А.А., Tretiakov Yu.D., Novak P.Ya. et al. Termodinamika i razuporyadochenie oksidnykh vanadievykh bronz [Thermodynamics and disorder of oxide vanadium bronzes]. Sverdlovsk, Ural Branch of the Academy of Sciences USSR Publ., 1988, 129 p. (In Russian).
10. Valeeva A.A., Rempel A.A. Cluster probabilities in ordered titanium monoxide TiOy as functions of the long- range order parameters, JEPT Letters, 2008, vol. 88, issue 3, pp. 172-177. DOI: 10.1134/S002136400815006X.
11. Lifshits I.M., Groedeskool S.A., Pastur L.A. Vvedenie v teoriyu neuporyadochennykh sistem [Introduction to the theory of disordered systems]. Мoscow, Nauka Publ., 1982, 358 p. (In Russian).

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