Fabrication of hydrophobic surface of titanium dioxide films by successive ionic layer adsorption and reaction (SILAR) method

Title
Fabrication of hydrophobic surface of titanium dioxide films by successive ionic layer adsorption and reaction (SILAR) method
Authors
모어준자카록핸드주오심
Keywords
TiO2; SILAR; XRD; SEM; TEM; Optical; Contact angle
Issue Date
2009-04
Publisher
Applied surface science
Citation
VOL 255, NO 12, 6067-6072
Abstract
Titanium dioxide (TiO2) films were fabricated on fluorine doped tin oxide (FTO) coated glass substrate using successive ionic layer adsorption and reaction (SILAR) method. The X-ray diffraction, scanning electron microscopy, transmission electron microscopy, optical absorption and contact angle measurement were applied to study the structural, surface morphological, optical and surface wettability properties of the as-deposited and annealed TiO2 films. The X-ray diffraction studies revealed both as-deposited and annealed TiO2 films are amorphous. Irregular shaped spherical grains of random size and well covered to the fluorine doped tin oxide coated glass substrates were observed from SEM studies with some cracks after annealing. The optical band gap values of virgin TiO2, annealed, methyl violet and rose bengal sensitized TiO2 were found to be 3.6, 3.5, 2.87 and 2.95 eV, respectively. Surface wettability studied in contact with liquid interface, showed hydrophobic nature as water contact angles were greater than 908. The adsorption of dyes, as confirmed by the photographs, is one of the prime requirements for dye sensitized solar cells (DSSC).
URI
http://pubs.kist.re.kr/handle/201004/35033
ISSN
0169-4332
Appears in Collections:
KIST Publication > Article
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