TiO2 thin films prepared by sol–gel method for waveguiding applications: Correlation between the structural and optical properties

Mechiakh, R.; Meriche, Faiza; Kremer, R.; Bensaha, R.; Boudine, B.; Boudrioua, Azzedine

doi:10.1016/j.optmat.2007.02.047

Cited by 100 publications

(50 citation statements)

References 18 publications

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“…Propagation loss for a TiO 2 channel waveguide would decrease to those of the planar waveguides (2 dB/cm), in which the prepared TiO 2 films are homogeneous, sparse, and thin. 25,26 In summary, TiO 2 channel waveguides with micrometer-size width were fabricated using microfabrication process and their optical characteristics were observed. The channels successfully guided light of 632.8 nm along linear and Y-branched patterns.…”

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confidence: 99%

Development of microfabricated TiO2 channel waveguides

et al. 2011

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An optical channel waveguide is a key solution to overcome signal propagation delay. For the benefits of miniaturization, development of microfabrication process for waveguides is demanded. TiO2 is one of the suitable candidates for the microfabricated waveguide because of the high refractive index and the transparency. In the present study, conventional microfabrication processes manufactured TiO2 channel waveguides with 1-20 μm width on oxidized Si substrates and the propagation loss was measured. The prepared channels successfully guided light of 632.8 nm along linear and Y-branched patterns. The propagation loss for the linear waveguide was 9.7 dB/cm

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confidence: 99%

Development of microfabricated TiO2 channel waveguides

et al. 2011

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“…Hence, the above thermal events were represented by an endothermic peak spreading from 50 to 250 °C. A double exothermic peak in the 260-450 °C temperature range of TiO2 xerogel can be attributed to the crystallization of titanium oxide [61].…”

Section: Thermal Analysismentioning

confidence: 99%

Synthesis, Characterization and Properties of Zirconium Oxide (ZrO2)-Doped Titanium Oxide (TiO2) Thin Films Obtained via Sol-Gel Process

Bensaha¹,

Bensouyad²

2012

Heat Treatment - Conventional and Novel Applications

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“…In this study, ethanol (C 2 H 5 OH) was utilized as alcoholic solvent. Acetic acid (CH 3 COOH) performed the role of chelating agent and the metal alkoxide employed was titanium isopropoxide (TIP) Ti{OCH(CH 3 ) 2 yellowish solution. Three types of solutions were made having 4%, 7% and 10% Fe +3 content.…”

Section: Experimental Workmentioning

confidence: 99%

“…TiO 2 has received great attention since the last two decades owing to its high refractive index, large dielectric constant, immense physio-chemical stability, colossal inertness in austere ambiences, reduced toxicity, low cost and hassle free developmental methods. Presently, TiO 2 is actively employed in optoelectronic sensors [1], waveguides [2], photovoltaic cells [3], photo catalysts [4], as pigments in paints [5] and food (for colouring and additives), biomaterials (as bone substituents and cardiovascular implants) [6] and neutralizing agent against microbial organisms [7]. TiO 2 , being a remarkable photocatalyst in UV region, lacks photophysical properties in visible region due to its large bandgap (3.25 eV).…”

Section: Introductionmentioning

confidence: 99%

Impact of Iron Doping on Structural and Optical Properties of Titanium dioxide

Imtiaz¹,

Shah²,

Ahmad³

et al. 2017

Sixth International Conference on Advances in Computing, Electronics and Communication - ACEC 2017

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Abstract-Pure and Fe+3 doped titanium dioxide thin films were prepared by sol-gel spin coating technique. Phase analysis, crystallite size, dislocation density and toughness of films were scrutinized by X-ray diffraction (XRD). The principal phase in the films was anatase. Crystallite size plummeted from 39.3 to 33.22nm whereas dislocation densities escalated from 6.47 x 10 -4 to 9.06 x 10 -4 (nm) -3 when Fe +3 content rose from 0 to 10%. These mushroomed dislocation densities imparted strength to the films on account of grain boundary strengthening phenomenon. Principal anatase phase of the films was validated by Raman spectroscopy. Minor peak broadening and peak shifting was observed for doped films, that were attributed to the dislocation induced stresses by the rising Fe +3 content. UV-Vis spectrophotometry was undertaken to ascertain the transmittance of films in ultraviolet and visible spectrums. The films exhibited substantial transmittance in the visible region but there was a vivid landslide from 78 to 37% with elevation of Fe +3 content. In order to establish the band gap reduction in doped films, Tauc plot was utilized. Band gap abated from 3.24 to 3.08eV with burgeoning Fe +3 content from 0 to 10% so that effective photocatalytic activity can occur in the visible spectrum as well.

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TiO2 thin films prepared by sol–gel method for waveguiding applications: Correlation between the structural and optical properties

Cited by 100 publications

References 18 publications

Development of microfabricated TiO2 channel waveguides

Development of microfabricated TiO2 channel waveguides

Synthesis, Characterization and Properties of Zirconium Oxide (ZrO2)-Doped Titanium Oxide (TiO2) Thin Films Obtained via Sol-Gel Process

Impact of Iron Doping on Structural and Optical Properties of Titanium dioxide

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