Effect of Cr2O3 on the bandgap of TiO2 thin films

Authors

  • Віктор Васильович Брус Fedkovich Chernivtsi National University st. Kotsyubinskogo 2, Chernivtsi, Ukraine, 58012, Ukraine
  • Андрій Ігорович Мостовий Fedkovich Chernivtsi National University st. Kotsyubinskogo 2, Chernivtsi, Ukraine, 58012, Ukraine
  • Павло Дмитрович Мар’янчук Fedkovich Chernivtsi National University st. Kotsyubinskogo 2, Chernivtsi, Ukraine, 58012, Ukraine

DOI:

https://doi.org/10.15587/1729-4061.2013.19695

Keywords:

TiO2, Cr2O3, optical properties, doping, envelope method, impurity, band gap, thin film, the absorption coefficient, refractive index

Abstract

Titanium dioxide (TiO2) is a large band gap semiconductor with many interesting properties. This material possesses high refractive index and low absorption coefficient in visible range, which makes it an excellent optical coating material.

Cr2O3 seems to be one of the most promising impurities in TiO2 as it shifts the optical absorption spectrum towards the visible range and improves the photocurrent density of TiO2.

Titanium dioxide thin films doped with chromium oxide (Cr2O3 – 1; 3; mol%) were deposited onto glass substrates in a universal coating system Leybold – Heraeus L560 by electron-beam evaporation.

The transmission spectra of the TiO2 and TiO2 - Cr2O3 thin films were measured by a spectrophotometer SF-2000 within the wavelength range 200 - 1100 nm with a step of 1 nm.

The effect of Cr2O3 concentration on the band gap of titanium dioxide thin films was investigated.

Author Biographies

Віктор Васильович Брус, Fedkovich Chernivtsi National University st. Kotsyubinskogo 2, Chernivtsi, Ukraine, 58012

Candidate of engineering sciences, Assistant professor

Department of Electronics and Energy Engineering

Андрій Ігорович Мостовий, Fedkovich Chernivtsi National University st. Kotsyubinskogo 2, Chernivtsi, Ukraine, 58012

Рostgraduate student 

Павло Дмитрович Мар’янчук, Fedkovich Chernivtsi National University st. Kotsyubinskogo 2, Chernivtsi, Ukraine, 58012

Doctor, Professor, Head of the Department

Department of Electronics and Energy Engineering

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Published

2013-12-28

How to Cite

Брус, В. В., Мостовий, А. І., & Мар’янчук, П. Д. (2013). Effect of Cr2O3 on the bandgap of TiO2 thin films. Eastern-European Journal of Enterprise Technologies, 6(12(66), 15–18. https://doi.org/10.15587/1729-4061.2013.19695

Issue

Vol. 6 No. 12(66) (2013): Physical and technological problems of radio engineering devices, telecommunication, nano-and microelectronics

Section

Physical and technological problems of radio engineering devices, telecommunication, nano-and microelectronics

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Copyright (c) 2014 Віктор Васильович Брус, Андрій Ігорович Мостовий, Павло Дмитрович Мар’янчук

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