Naslov
Electrical Conductivity of Nanostructured TiO2 Films on Glass Substrate Measured by Impedance Spectroscopy

Autori
Turković, Aleksandra ; Gaberšček, Miran ; Crnjak Orel, Zorica

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
16th International Vacuum Congress : Book of abstracts. Vol.2 : Poster Sessions ; IVC-16, ICSS-12, NANO-8, AIV-17 / Borello, G.P. ; Campani, M. - Venecija : RedHat Linux, 2004, 398-398

Skup
International Vacuum Congress (16 ; 2004)

Mjesto i datum
Venecija, Italija, 28.06.2004. - 02.07.2004

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
titanium dioxide; GISAXS; IS

Sažetak
Films containing nanosized grains of titanium dioxide (TiO2) are widely used in research into mainly optical, photovoltaic, photochromic and electrochromic devices. In most cases there is a desirable average grain size, but also a porosity of TiO2. Films of titanium dioxide derived by organic sol-gel route were investigated by transmission electron microscopy. It shows them as polydispersed and porous, with nanometer sized grains. Measurements by grazing-incidence small-angle X-ray scattering (GISAXS) showed that grain sizes vary with the thickness of the films. In order to determine electrical properties of nano-TiO2 films, samples were characterised by impedance spectroscopy (IS). We have found the dependence of electrical conductivity upon the grain sizes in nanostructured films of TiO2. The experiment was done in the range of film˘s thickness from 200 Å to 1200 Å. Porosity for these films thickness is constant and expressed by internal specific surface equals Ss= 1 nm-1.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA