Naslov
Self-Ordered Voids Formation in SiO2 Matrix by Ge Outdiffusion

Autori
Pivac, Branko ; Dubček, Pavo ; Dasović, Jasna ; Zorc, Hrvoje ; Bernstorff, Sigrid ; Zavašnik, Janez ; Vlahovic, Branislav

Izvornik
Journal of Nanomaterials (1687-4110) 2018 (2018); 9326408, 8

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

Ključne riječi
x-ray-scattering

Sažetak
The annealing behavior of very thin SiO2/Ge multilayers deposited on Si substrate by e-gun deposition in high vacuum was explored. It is shown that, after annealing at moderate temperatures (800 degrees C) in inert atmosphere, Ge is completely outdiffused from the SiO2 matrix leaving small (about 3 nm) spherical voids embedded in the SiO2 matrix. These voids are very well correlated and formed at distances governed by the preexisting multilayer structure (in vertical direction) and self-organization (in horizontal direction). The formed films produce intensive photoluminescence (PL) with a peak at 500 nm. The explored dynamics of the PL decay show the existence of a very rapid process similar to the one found at Ge/SiO2 defected interface layers.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA