2016
Structural and morphological characterization of Al2O3 coated macro-porous silicon by atomic layer deposition
SAMPATH, Sridhar; Philipp MAYDANNIK; Tatiana IVANOVA; Tomáš HOMOLA; Mika SILLANPAA et. al.Základní údaje
Originální název
Structural and morphological characterization of Al2O3 coated macro-porous silicon by atomic layer deposition
Autoři
SAMPATH, Sridhar; Philipp MAYDANNIK; Tatiana IVANOVA; Tomáš HOMOLA; Mika SILLANPAA; Rameshbabu NAGUMOTHU a Viswanathan ALAGAN
Vydání
Thin Solid Films, 2016, 0040-6090
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10305 Fluids and plasma physics
Stát vydavatele
Švýcarsko
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 1.879
Kód RIV
RIV/00216224:14310/16:00090987
Organizační jednotka
Přírodovědecká fakulta
UT WoS
000389388600089
EID Scopus
2-s2.0-84988883610
Klíčová slova anglicky
Electrochemical anodization;Atomic layer deposition;Porous silicon;Conformal coating;Band gap energy
Změněno: 13. 4. 2017 23:06, Ing. Andrea Mikešková
Anotace
V originále
In the present study, Al2O3 coated on macro-porous silicon (m-PS) is prepared by atomic layer deposition (ALD) whereas m-PS is prepared by electrochemical anodization of P type silicon (100) with current density of 15 mA/cm2. Field emission scanning electron microscopy analysis shows Al2O3 nanoparticles with size of ~ 100 nm are conformally coated on m-PS. The surface chemistry and formation mechanism of ALD of Al2O3 (ALD-Al2O3) on m-PS are demonstrated in detail. Optical profilometer results of Al2O3/m-PS confirm conformality of Al2O3 coating on m-PS because the surface amplitude parameter values of m-PS are decreased after ALD-Al2O3. Fourier Transform Infrared analysis confirms that unstable Si-H species of m-PS are replaced with stable Si-Al species. X-ray photoelectron spectroscopy (XPS) analysis of Al2O3/m-PS is carried out for chemical analysis and band gap energy measurement of Al2O3. The XPS survey spectrum shows that fluorine peak is also evolved along with Al, O and C elements which confirm that m-PS surface consists of fluorine. The band gap energy of Al2O3 coating is calculated as 6.91 eV from analysis of high resolution O 1s spectrum.
Návaznosti
| ED2.1.00/03.0086, projekt VaV |
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| LO1411, projekt VaV |
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