Naslov
Self-organization of nanoparticles in TiO2 thin film on the glass substrate

Autori
Turković, Aleksandra ; Dubček, Pavo ; Fox, Nikola Dean

Izvornik
Vacuum (0042-207X) 80 (2005), 1-3; 108-112

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
titanium dioxide; sol-gel; GIWAXD

Sažetak
Nanocrystalline titanium dioxide colloids have been synthesized using a sol-gel technique followed by growth under hydrothermal conditions in a alkaline environment at temperatures between 190o and 270o C. Thin films have been made from aqueous suspension of these colloids. Grazing-incidence wide-angle X-ray diffraction (GIWAXD) analysis showed the films to be primarily the anatase crystal phase. It is in agreement with previous scanning electron microscopy (SEM) results, which had revealed a predominantly rod like particle morphology after growth at lower temperatures. The formation of principally truncated tetragonal or tetrahedral bipyramidal nanocrystallites followed growth at higher temperatures. The rod like particles self-organize into regular cubic arrays with the long axis of the rods aligned perpendicular to the film surface. This self-organization is dependent upon the base used in colloidal synthesis.

Izvorni jezik
Engleski

Znanstvena područja
Fizika, Elektrotehnika

POVEZANOST RADA