Porous silicon prepared from p- and p++ bulk silicon (CROSBI ID 608345)
Prilog sa skupa u zborniku | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Đerek, Vedran ; Baltić, Romana ; Marciuš, Marijan ; Ristić, Mira ; Orel, Zorica Crnjak ; Ivanda, Mile
engleski
Porous silicon prepared from p- and p++ bulk silicon
Macro and meso-porous silicon (PSi) samples were prepared by electrochemical anodisation of p- and p++ doped silicon wafers in hydrofluoric acid (HF) based electrolyte under galvanostatic conditions. Anodisation time and current were varied in order to obtain different PSi morphologies. Samples were characterized by scanning electron microscopy (SEM), photoluminescence (PL) spectroscopy and Raman spectroscopy. Samples prepared on p- type substrates were macro-porous, showed visible photoluminescence and no observable phonon confinement in Raman spectrum. Porous silicon prepared on p++ type substrates was mesoporous, showed no observable photoluminescence and intense phonon confinement was observed in their Raman spectra. Silicon nanocrystal dimensions in PSi samples obtained from photoluminescence and phonon confinement models were correlated with silicon electrochemical dissolution valence nd. A surface morphology instability is identified in case where electrolyte is more conductive than the silicon substrate.
Electrochemical dissolution; Galvanostatic conditions; Morphology instabilities; Phonon confinement; Phonon confinement model; Silicon nanocrystals; Silicon substrates; Visible photoluminescence
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Podaci o prilogu
18-21.
2013.
objavljeno
Podaci o matičnoj publikaciji
Proceedings of 36th International Convention MIPRO 2013
Biljanovic, Petar ; Skala, Karol
Rijeka: Denona
Podaci o skupu
36th International Convention on Information and Communication Technology, Electronics and Microelectronics (MIPRO 2013)
predavanje
20.05.2013-24.05.2013
Opatija, Hrvatska