Influence of substrate on structural, morphological and optical properties of TiO2 thin films deposited by reaction magnetron sputtering

Zhu, Xinghua; Gu, Ping; Wu, Haihua; Yang, Dingyu; Sun, Haiming; Wangyang, Peihua; Li, Jitao; Tian, Haibo

doi:10.1063/1.5017242

Cited by 40 publications

(12 citation statements)

References 25 publications

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“…The vibrational bands of anatase TiO 2 material has centered at 137, 207, 414, 519 and 644.8 cm −1 , respectively, corresponding to the Raman active modes of Eg, Bg, B1g, A1g, and Eg as showed in inserted Fig. 5 [26,27]. It can be concluded that strong anatase peak at 137 cm −1 .…”

Section: Resultsmentioning

confidence: 86%

Ultraviolet and visible reflective TiO2/SiO2 thin films on silicon using sol-gel spin coater

Saravanan¹,

Dubey²

2021

Nanosystems: Phys. Chem. Math.

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TiO 2 /SiO 2 alternative thin films (stacks) were deposited on silicon substrates using sol-gel spin-coating techniques. The prepared samples had their corresponding optical properties analyzed by UV-Visible spectrophotometry (UV-Vis), X-ray diffractometry (XRD), a surface profilometer, and Raman spectroscopy. The optical and crystallization properties of thin films were varied and compared by changing the number of stacks. UV-Vis spectrum showed high reflectance and shifting towards the infrared region with effect of increased TiO 2 /SiO 2 stacks. XRD spectra confirmed the existence of anatase TiO 2 and SiO 2 diffraction peaks. The multilayer film thickness was calculated at 109 and 151 nm at two and four stacks by a surface profilometer. The Raman spectra confirmed the Si-O-Si and TiO 2 stretching modes at 2600, 980, and 519 cm −1 . This investigation reveals the promising and effective UV-Visible reflective property of alternative TiO 2 /SiO 2 thin films on a silicon substrate.

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Section: Resultsmentioning

confidence: 86%

Ultraviolet and visible reflective TiO2/SiO2 thin films on silicon using sol-gel spin coater

Saravanan¹,

Dubey²

2021

Nanosystems: Phys. Chem. Math.

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“…The bound state energy level and exciton pair recombination took place in a concise electron-free channel, which may be the cause of the peak at 491 nm. Additionally, the defects in the crystal’s structure caused by oxygen vacancies are another factor in the emergence of this peak in the CuO–Cu 2 O. − These oxygen vacancies work as active sites to trap the generated electrons, ultimately enhancing the lifetime of excitons and emphasizing the photocatalytic performance . The broadening of the peaks at 491 nm is caused by the development of mixed nanocrystal phases of CuO and Cu 2 O, which may also be related to the CuO phases .…”

Section: Resultsmentioning

confidence: 99%

New Insights into Cu/Cu₂O/CuO Nanocomposite Heterojunction Facilitating Photocatalytic Generation of Green Fuel and Detoxification of Organic Pollutants

et al. 2023

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Cu/Cu 2 O/CuO nanocomposites were synthesized using the simple wet chemical approach for the production of dihydrogen as a potential fuel source and for the detoxification of dyes. The formation of Cu/Cu 2 O/ CuO nanocomposites is confirmed by powder X-ray diffraction, whereas the W-H plot revealed the average particle size of nanocomposite approximately 17 nm, which is in good agreement with the Scherrer method and transmission electron microscopy analysis. The uniform distribution of Cu and O elements was supported by the elemental mapping of the nanocomposite. Band gaps of CuO and Cu 2 O were found to be 1.71 and 1.92 eV, respectively, using diffuse reflectance spectroscopy spectra and Kubelka−Munk functions. The oxygen vacancies in the nanocomposite are confirmed by various analytical spectroscopic techniques, such as electron paramagnetic resonance, Raman, photoluminescence, and X-ray photoelectron spectroscopy (XPS) spectra. The significant boost in the performance of the fabricated nanocomposite was observed and is attributed to the formation of a heterojunction and existence of oxygen vacancy. The nanocomposite demonstrated proficiency in the photocatalytic splitting of water for the production of hydrogen. The maximum hydrogen generation yield (68 μmol g −1 ) was observed for Cu/Cu 2 O/CuO nanocomposites along with NiO (co-catalyst) and methanol as a hole scavenger as well as an electron donor. Moreover, the degradation of congo red (CR) and malachite green (MG) dyes was also investigated and the efficiency of the nanocomposite was found to be 80 and 60%, respectively, after 120 min of light irradiation. The stability of nanocomposites after photocatalysis was investigated by the XPS spectrum of the nanocomposite. Explicitly, the area and broadening of the O 1s XPS spectrum demonstrated higher degradation of CR dye as compared to MG dye.

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“…The growth of TiNPs on glass substrate exhibited greater grain size than that deposited on Si n-type substrate, which agrees with previous research work of Francisco et. al [35]. The Scherrer formula was used to determine the grain size of the titanium thin film (D) [36].…”

Section: Resultsmentioning

confidence: 99%

Improvement of Substrates Properties by Incorporating Titanium Nanoparticles Deposited by DC Diode Sputtering Approach

Hadi¹,

Jawad²,

Hassoon³

2022

JASN

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In this work, the synthesis of titanium thin films on two different substrates (glass and n-type Si), with thicknesses of 90 and 145 nm at two different times (5 and 10 min) respectively, have been obtained. The thin films have been successfully deposited on glass and silicon substrates using DC diode sputtering technique. The optical properties of the prepared thin films have been checked out using the optical reflectance spectrum. A significant reduction in surface reflectivity was observed at (10 min) sputtering time. The structural properties of the prepared thin films were studied using X-ray diffraction (XRD) and field-emission scanning electron microscopy (FE-SEM). XRD results confirmed that titanium thin films had a hexagonal structure with preferred orientation on (002). The images of FESEM showed that all the samples had a uniform distribution of granular surface morphology. The grain sizes of the Ti nanostructure were estimated using Scherrers' analysis. The thickness of Ti thin film increased as the sputtering time increased for both glass and Si n-type substrates. The repeated experiments revealed that the most uniform Ti thin film is on Si substrate (n-type) with particle size 10 nm at deposition time 5 min.

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Influence of substrate on structural, morphological and optical properties of TiO2 thin films deposited by reaction magnetron sputtering

Cited by 40 publications

References 25 publications

Ultraviolet and visible reflective TiO2/SiO2 thin films on silicon using sol-gel spin coater

Ultraviolet and visible reflective TiO2/SiO2 thin films on silicon using sol-gel spin coater

New Insights into Cu/Cu₂O/CuO Nanocomposite Heterojunction Facilitating Photocatalytic Generation of Green Fuel and Detoxification of Organic Pollutants

Improvement of Substrates Properties by Incorporating Titanium Nanoparticles Deposited by DC Diode Sputtering Approach

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Influence of substrate on structural, morphological and optical properties of TiO2 thin films deposited by reaction magnetron sputtering

Cited by 40 publications

References 25 publications

Ultraviolet and visible reflective TiO2/SiO2 thin films on silicon using sol-gel spin coater

Ultraviolet and visible reflective TiO2/SiO2 thin films on silicon using sol-gel spin coater

New Insights into Cu/Cu2O/CuO Nanocomposite Heterojunction Facilitating Photocatalytic Generation of Green Fuel and Detoxification of Organic Pollutants

Improvement of Substrates Properties by Incorporating Titanium Nanoparticles Deposited by DC Diode Sputtering Approach

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Product

Resources

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New Insights into Cu/Cu₂O/CuO Nanocomposite Heterojunction Facilitating Photocatalytic Generation of Green Fuel and Detoxification of Organic Pollutants