Effect of Target Sintering Temperature on the Morphological and Optical Properties of Pulsed Laser Deposited TiO2 Thin Films

Kadri, Laid; Bulai, Georgiana; Cârlescu, Aurelian; Stoian, George; Gurlui, Silviu; Leontie, Liviu; Doroftei, C.; Adnane, M.

doi:10.3390/coatings11050561

Cited by 6 publications

(5 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The sintering temperature also results in a change of micrograin structure, crystallinity, morphology, grain size, etc. [21][22][23][24]. Dhiflaoui et al [25] synthesized pure rutile TiO 2 nanoparticles after heating at 850°C.…”

Section: Introductionmentioning

confidence: 99%

Effect of Temperature Sintering on Grain Growth and Optical Properties of TiO2 Nanoparticles

Yihunie

2023

Journal of Nanomaterials

View full text Add to dashboard Cite

Titanium dioxide (TiO2) nanoparticles were prepared by the sol–gel method and the structural, morphological, and optical properties were investigated at different sintering temperatures of 500, 600, 700, 800, and 900°C. A tetragonal structure of anatase, mixed (anatase–rutile), and rutile phases are observed in the X-ray diffraction (XRD) analysis. Pure anatase phase formation occurred at 500°C, whereas anatase-to-rutile phase transformation began at 600°C, and reaching complete conversion to rutile at 800°C. The average crystallite size increased from 23 to 34 nm for anatase and 38 to 62 nm for the rutile when sintering temperature increased from 500 to 900°C. The scanning electron microscope (SEM) result presented the increase of grain size (25–100 nm) with increasing the sintering temperature. The Fourier transform infrared (FTIR) spectra demonstrated the presence of TiO2 vibrational bonds in all samples. The optical bandgaps of the sintered TiO2 nanoparticles decreased with rising sintering temperature. Photoluminescence spectra exhibited three characteristic peaks centered at 380, 450, and 550 nm. The emission intensity increased with increasing the sintering temperature. The Mie analysis was also studied to calculate scattering cross-section, forward scattering, and asymmetry for different grain sizes. The results showed that by increasing the nanoparticle diameters, the peaks of all spectra are redshifted for larger grain sizes and cross-section peaks shift to high values. In this study, the sintering temperature is observed to have a strong influence on crystalline phase transformation, microstructure, and optical properties of TiO2 nanoparticles. The TiO2 sample sintered at 900°C shows the best result to be used as luminescent material due to the low optical bandgap energy.

show abstract

Section: Introductionmentioning

confidence: 99%

Effect of Temperature Sintering on Grain Growth and Optical Properties of TiO2 Nanoparticles

Yihunie

2023

Journal of Nanomaterials

View full text Add to dashboard Cite

show abstract

“…Figure 4 shows the absorption spectrum (inset) and tauc's plot of SnO 2 and SnO 2 /rGO nanocomposite. The nature of electronic transition from the absorption of photon energy is determined by using the relation [20,21],…”

Section: Structural Morphological and Optical Studiesmentioning

confidence: 99%

Hydrothermally Grown SnO 2 and SnO 2 /rGO Nanocomposite and Its Physio-Electrochemical Studies for Pseudocapacitor Electrode Applications

Osora,

Kolkoma,

Anduwan

et al. 2023

Preprint

View full text Add to dashboard Cite

In this present work, the transition metal oxides of SnO2 and SnO2/rGO nanocomposite were synthesized through a facile hydrothermal method for supercapacitor electrode material applications. The structural, morphological and elemental analysis of the synthesised samples were characterised by X-ray diffractometer technique (XRD), Field emission scanning electron microscopy (FESEM), Energy dispersive X-ray analysis (EDX) and High-resolution transmission electron microscopy (HR-TEM). The morphology of SnO2 was agglomeration of quasi-spherical shape particles with a diameter range of 12–19 nm as observed using the HR-TEM technique. The optical properties were characterised by UV-vis and Raman spectroscopy. The electrochemical performance of SnO2 and SnO2/rGO nanocomposite electrode was studied in a 3M KOH electrolyte. A specific capacitance of 346 F g− 1 at the current density of 0.95 A g− 1 for SnO2/rGO nanocomposite electrode was recorded, which was significantly higher than that of as-synthesised SnO2 electrode (267 F g− 1). The obtained higher capacitance resulted due to the synergistic effect of excellent conductivity and high surface area of rGO within the composite electrode. The exceptional electrochemical properties clearly indicate that the SnO2/rGO nanocomposites are the best for highly efficient pseudocapacitor electrodes in future energy storage devices applications.

show abstract

“…Pulsed laser deposition is a technique that has been also widely utilized for preparing Ti:X layers onto indium tin oxide [ 29 , 36 ]. The morphological features and the electrical properties of Ti:X film deposited onto the TCO can be controlled by varying substrate temperature.…”

Section: Description Of Deposition Techniques Of Tco-ti: Metal Thin F...mentioning

confidence: 99%

The Anodization of Thin Titania Layers as a Facile Process towards Semitransparent and Ordered Electrode Material

2022

View full text Add to dashboard Cite

Photoanodes consisting of titania nanotubes (TNTs) grown on transparent conductive oxides (TCO) by anodic oxidation are being widely investigated as a low-cost alternative to silicon-based materials, e.g., in solar light-harvesting applications. Intending to enhance the optical properties of those photoanodes, the modification of the surface chemistry or control of the geometrical characteristics of developed TNTs has been explored. In this review, the recent advancement in light-harvesting properties of transparent anodic TNTs formed onto TCO is summarized. The physical deposition methods such as magnetron sputtering, pulsed laser deposition and electron beam evaporation are the most reported for the deposition of Ti film onto TCO, which are subsequently anodized. A concise description of methods utilized to improve the adhesion of the deposited film and achieve TNT layers without cracks and delamination after the anodization is outlined. Then, the different models describing the formation mechanism of anodic TNTs are discussed with particular focus on the impact of the deposited Ti film thickness on the adhesion of TNTs. Finally, the effects of the modifications of both the surface chemistry and morphological features of materials on their photocatalyst and photovoltaic performances are discussed. For each section, experimental results obtained by different research groups are evoked.

show abstract

Effect of Target Sintering Temperature on the Morphological and Optical Properties of Pulsed Laser Deposited TiO2 Thin Films

Cited by 6 publications

References 48 publications

Effect of Temperature Sintering on Grain Growth and Optical Properties of TiO2 Nanoparticles

Effect of Temperature Sintering on Grain Growth and Optical Properties of TiO2 Nanoparticles

Hydrothermally Grown SnO 2 and SnO 2 /rGO Nanocomposite and Its Physio-Electrochemical Studies for Pseudocapacitor Electrode Applications

The Anodization of Thin Titania Layers as a Facile Process towards Semitransparent and Ordered Electrode Material

Contact Info

Product

Resources

About