Real-time optical studies in the UV range of the annealing of zirconium-oxide thin films in vacuum

Cheon, Hyuknyeong; An, Ilsin

doi:10.3938/jkps.66.128

Cited by 2 publications

(1 citation statement)

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“…Doped zirconia (ZrO 2 ) has potential applications because it has good thermal, mechanical, electrical, and optical properties. 1,2) For these applications, it is necessary to understand the associated growth mode of ZrO 2 nanocrystals and to modify the microstructure by incorporation of dopants, which will have a great influence on the properties. 3,4) Zirconium oxide is a widely studied material because of its enormous applications in electrochemical devices such as oxygen pumps 5) and semiconductor electrolyte for fuel cells.…”

Section: Introductionmentioning

confidence: 99%

Thermally activated charge transport in modified tetragonal zirconia thin films prepared by sol–gel method

Aboulkacem

Ammari

Bediaf

et al. 2018

Jpn. J. Appl. Phys.

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Films of Sn-doped ZrO2 were prepared using the sol–gel based dip-coating technique. The X-ray diffraction patterns showed a tetragonal structure with a preferential orientation along the (111) plane. The average grain size of the samples varies from 9.53 to 12.64 nm. Thermal analysis revealed endothermic peaks in the range 84–90 °C and exothermic peaks appearing in the range 489–531 °C. Fourier transform infrared (FTIR) spectra depicted bands located at 612 and 736 cm−1, which are attributed to stretching mode and asymmetric vibrations of Zr–O and O–Zr–O bonds respectively. All films exhibited high transmittance in the visible range above 60% and the optical band gap (Eg) decreases from 4.085 to 4.061 eV. The impedance measurements show that the equivalent circuit of the samples is an RpCp where Cp is the capacitance of the layer and Rp its resistance. The electrical conductivity was found to follows an Arrhenius law with two activation energies.

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