Preparation and characterization of Al-doped ZnO piezoelectric thin films grown by pulsed laser deposition

Taabouche, Adel; Bouabellou, A.; Kermiche, Fouad; Hanini, Faouzi; Sedrati, C.; Bouachiba, Yassine; Benazzouz, C.

doi:10.1016/j.ceramint.2016.01.033

Cited by 49 publications

(7 citation statements)

References 30 publications

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“…We observe the excitation of one guided mode for both TE 0 and TM 0 polarizations in all samples. Under the assumption of the isotropic refractive index [6,27], the refractive index and the thickness of the samples are deduced and listed in table 2. TiO 2 :SnO 2 films are thinner than those of TiO 2 (the thickness decreases from 210 nm for TiO 2 to 164 nm for TiO 2 :SnO 2 (6:4) thin films).…”

Section: Waveguiding Measurementsmentioning

confidence: 99%

Study of TiO₂, SnO₂ and nanocomposites TiO₂:SnO₂ thin films prepared by sol-gel method: Successful elaboration of variable–refractive index systems

Medjaldi

Bouabellou

Bouachiba

et al. 2020

Mater. Res. Express

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In this research TiO 2 , SnO 2 and TiO 2 :SnO 2 nanocomposite thin films were fabricated by the sol-gel dip coating technique. The mixture was prepared by varying the molar ratio of SnO 2 to TiO 2 , i.e. TiO 2 :SnO 2 (9:1), TiO 2 :SnO 2 (8:2) and TiO 2 :SnO 2 (6:4)). The obtained samples were characterized by means of the Raman microscopy, Scanning Electron Microscopy (SEM), UV-Vis spectrophotometry and m-lines spectroscopy (Prism coupler). Raman analysis shows that pure TiO 2 and SnO 2 thin films are characterized by the vibrational modes of anatase and rutile cassiterite, respectively. Furthermore, the Raman spectra of the TiO 2 :SnO 2 nanocomposites show the presence of a mixture of anatase and rutile TiO 2 phases. The SEM images reveal that the morphology is clearly modified with SnO 2 content. The ripples in the transmittance spectra decreased with increasing SnO 2 content. Also, the evolution of the optical band gap seems to be consistent with the Raman analysis. A great attention has been paid to the refractive index measurements by the prism coupler technique. In this way, variable-refractive index systems have been successfully obtained using TiO 2 :SnO 2 nanocomposite thin films.

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Section: Waveguiding Measurementsmentioning

confidence: 99%

Study of TiO₂, SnO₂ and nanocomposites TiO₂:SnO₂ thin films prepared by sol-gel method: Successful elaboration of variable–refractive index systems

Medjaldi

Bouabellou

Bouachiba

et al. 2020

Mater. Res. Express

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“…technique is an optical method uses to obtain the various guided modes and to determine the different opt-geometric parameters (thickness and refractive index) of waveguiding thin films. [23]. Consequently, we can determine the refractive indices n TE (ordinary refractive index) and n TM (extraordinary refractive index) for the transverse electric (TE) and transverse magnetic (TM) polarizations, and the thickness of films (d).…”

Section: Waveguiding Measurements M-line Spectroscopy (Mls)mentioning

confidence: 99%

Comparison of Thin Films of Titanium Dioxide Deposited by Sputtering and Sol-Gel Methods for Waveguiding Applications

et al. 2022

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In this work, TiO2 thin films were deposited onto glass substrate by two different techniques: sol-gel dip-coating (SG) and reactive DC magnetron sputtering (Sput). The prepared samples have been characterized by means of micro-Raman, differential scanning calorimetry (DSC), thermogravimetric analysis (TGA) measurements, scanning electron microscopy (SEM), UV-Visible spectrophotometry, and M-Lines spectroscopy (MLS). The micro-Raman results showed an amorphous TiO2-SG phase and the vibrational mode of TiO2-Sput is anatase phase. DSC-TGA analysis was used to investigate the thermal properties of the TiO2 material. SEM spectroscopy has shown that TiO2-SG has a disordered and more porous surface, TiO2-Sput sample is homogeneous and shows uniform distribution of densely packed well-defined grains. The obtained films have an optical transmittance varying from 60 to 88% in the visible region. The optical band gaps deduced from the transmittance are 3.48 and 3.53 eV for TiO2-SG and TiO2-Sput, respectively. The optical waveguiding measurements carried out on TiO2-SG and TiO2-Sput films show single guided modes behavior (TE0 and TM0). These measurements have allowed deducing the refractive index and thickness values that are 2.06 at 216 nm for TiO2-SG and 2.26 at 204 nm for TiO2-Sput thin films. The analysis of waveguiding properties indicates that amorphous TiO2 may prove to be more efficient in photonic device as compared to crystalline TiO2. Keywords: TiO2, thin films, sol-gel, sputtering, anatase, waveguiding.

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“…Determination of the thickness of thin films is a topic of fundamental and technological importance. Therefore, RBS analysis [15,16] is also introduced to measure the thickness, simultaneously with the stoichiometry of TiO 2 films. Fig.…”

Section: Rbs Analysismentioning

confidence: 99%

TiO₂ waveguides thin films prepared by sol-gel method on glass substrates with and without ZnO underlayer

Bouachiba

Taabouche

Bouabellou

et al. 2020

Materials Science-Poland

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TiO2 thin films have been deposited on glass substrates with and without ZnO underlayer by sol-gel dip coating process. XRD patterns show the formation of anatase phase with the diffraction lines (1 0 1) and (2 0 0) in TiO2/glass sample. In TiO2/(ZnO/glass) sample, TiO2 is composed of anatase phase with the diffraction line (2 0 0) but the diffraction peaks of ZnO wurtzite are also well-defined. The determination of the refractive index and the thickness of the waveguiding layers has been performed by m-lines spectroscopy. The thickness of TiO2 thin films deduced by Rutheford Backscattering Geometry (RBS) agrees well with that obtained by m-lines spectroscopy. TiO2/glass sample exhibits one guided TE0 and TM0 polarized modes. In TiO2/(ZnO/glass) sample, only, TE0 single mode has been excited due to cutoff condition.

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Preparation and characterization of Al-doped ZnO piezoelectric thin films grown by pulsed laser deposition

Cited by 49 publications

References 30 publications

Study of TiO₂, SnO₂ and nanocomposites TiO₂:SnO₂ thin films prepared by sol-gel method: Successful elaboration of variable–refractive index systems

Study of TiO₂, SnO₂ and nanocomposites TiO₂:SnO₂ thin films prepared by sol-gel method: Successful elaboration of variable–refractive index systems

Comparison of Thin Films of Titanium Dioxide Deposited by Sputtering and Sol-Gel Methods for Waveguiding Applications

TiO₂ waveguides thin films prepared by sol-gel method on glass substrates with and without ZnO underlayer

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Preparation and characterization of Al-doped ZnO piezoelectric thin films grown by pulsed laser deposition

Cited by 49 publications

References 30 publications

Study of TiO2, SnO2 and nanocomposites TiO2:SnO2 thin films prepared by sol-gel method: Successful elaboration of variable–refractive index systems

Study of TiO2, SnO2 and nanocomposites TiO2:SnO2 thin films prepared by sol-gel method: Successful elaboration of variable–refractive index systems

Comparison of Thin Films of Titanium Dioxide Deposited by Sputtering and Sol-Gel Methods for Waveguiding Applications

TiO2 waveguides thin films prepared by sol-gel method on glass substrates with and without ZnO underlayer

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Study of TiO₂, SnO₂ and nanocomposites TiO₂:SnO₂ thin films prepared by sol-gel method: Successful elaboration of variable–refractive index systems

Study of TiO₂, SnO₂ and nanocomposites TiO₂:SnO₂ thin films prepared by sol-gel method: Successful elaboration of variable–refractive index systems

TiO₂ waveguides thin films prepared by sol-gel method on glass substrates with and without ZnO underlayer