Naslov
Alternating current electrochemical anodisation of silicon on insulator layers

Autori
Ivanda, Mile ; Đerek, Vedran ; Balarin, Maja ; Gamulin, Ozren ; Kosović, Marin ; Music, Svetozar ; Ristic, Mira ; Crnjak Orel, Zorica.

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
MIPRO 2013 36nd International Convention, Proceedings of MEET and GVS conferences / Biljanović, Petar ; Skala, Karolj (ur.) - Rijeka : Hrvatska udruga za informacijsku i komunikacijsku tehnologiju, elektroniku i mikroelektroniku - MIPRO, 2013, 15-17

ISBN
978-953233076-2

Skup
MIPRO 2013 36th International Convention

Mjesto i datum
Opatija, Hrvatska, 20.05.2013. - 24.05.2013

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Alternating current; Field emission scanning electron microscopy; Island-like structures; Micro-Raman spectra; Phonon confinement; Piezoelectric coefficient; Silicon on insulator; Structural and optical properties

Sažetak
Porous silicon (PSi) samples were prepared by electrochemical anodisation of silicon on insulator layers. Structural and optical properties of prepared samples were investigated by Raman and photoluminescence (PL) spectroscopy and field emission scanning electron microscopy (FE-SEM). The anodisation of silicon on insulator layers was performed by alternating currents (AC) of the mains frequency of 50 Hz. A very intensive PL was observed at the circular edge of the samples that exhibited micrometer sized island- like porous structure, while the central part of the samples showed moderate PL signal. The formation of such porous island-like structures with strong intensity PL was interpreted with stress induced due to difference of the piezoelectric coefficient of silicon and quartz layers (buried SiO2). Micro-Raman spectra of islands show strong phonon confinement with the cluster size between 1.4 and 3.5 nm.

Izvorni jezik
Engleski

Znanstvena područja
Fizika, Kemija

POVEZANOST RADA