Nanomechanical properties of dip coated indium tin oxide films on glass

Biswas, Nilormi; Ghosh, Priyanka; Sarkar, S.; Moitra, Debabrata; Biswas, Prasanta Kumar; Jana, Sunirmal; Mukhopadhyay, Anoop Kumar

doi:10.1016/j.tsf.2015.02.030

Cited by 18 publications

(6 citation statements)

References 43 publications

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“…These results are in general agreement with those reported by Biswas and co-authors, which show that there is a relation between the hardness and the oxygen contents in the ITO film materials. They found that when the oxygen content increased from 6 to 10 wt% in the precursor solutions, the hardness of the corresponding ITO films decreased from 9.6 ± 0.9 GPa to 1.6 ± 0.1 GPa[42].Barna et.al and Petrov et.al reported that, oxygen, impurities and other defects may lead to grain refinement and then change the morphology of the films[43,44]. As a summary, a higher annealing temperature leads to larger grain size (as mentioned previously in Section 3.1), which, when combined with substitutions, interstitials, and/or the formation of oxygen vacancies and other point defects, may cause a hardness decrement, although this effect is not so significant in our 4 at% samples.…”

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confidence: 99%

Probing the effects of thermal treatment on the electronic structure and mechanical properties of Ti-doped ITO thin films

Taha

Henry

Yin

et al. 2017

Journal of Alloys and Compounds

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Titanium-doped indium tin oxide thin films were synthesized via a sol-gel spin coating process. Surface chemical bonding states and mechanical properties have been investigated as a function of titanium content (2 and 4 at%) and annealing temperature ranging from 400 to 600 °C with increments of 100 °C. Raman analysis was performed to study the phonon vibrations for the prepared samples and the results revealed the existence of ITO vibrational modes. The elemental compositions, bonding states and binding energies of the film materials were investigated using X-ray photoelectron spectroscopy (XPS) technique. The XPS results indicated that the ratio of the metallic elements (In, Sn, Ti) to the oxygen on the surface of the thin film coatings decreased due to the increase of the oxide layer on the surface of the thin films. Also, by increasing the annealing temperature up to 600 °C, the Ti 2p and Cl 2p signals were no longer detected for both 2 and 4 at% Ti contents, respectively, due to the thicker surface oxidation layer. Mechanical properties of the synthesized films were also evaluated using a nanoindentation process. Variations in the hardness (H) and the elastic modulus (E) were observed with different Ti at% and annealing temperatures. The hardness is within the range of 6.3–6.6 GPa and 6.7–6.8 GPa for 2 and 4 at% Ti content samples, respectively, while the elastic modulus is within the ranges of 137–143 and 139–143 GPa for 2 at% and 4 at% Ti contents samples, respectively. A combination of the highest H and E were achieved in the sample of 4% Ti content annealed at 600 °C. Furthermore, the H/E ratio ranges from 4.5 × 10−2 to 5.0 × 10−2 which reflects a reasonable level of wear resistance

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confidence: 99%

Probing the effects of thermal treatment on the electronic structure and mechanical properties of Ti-doped ITO thin films

Taha

Henry

Yin

et al. 2017

Journal of Alloys and Compounds

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“…The real part of dielectric constant is originated due to the presence of free carrier electric susceptibility [19]. The real (ε 1 ) and imaginary (ε 2 ) values of dielectric constants were obtained using the expressions [19,20] ε 1 = n 2k 2 (7) ε 2 = 2nk (8) Dielectric constants depend on wavelength. The variation of dielectric constant values with wavelength were shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

“…Several methods were available for the synthesis of the thin films of tin oxide material. They are Spray pyrolysis [6], Spin coating method [7], Sol-gel dip coating technique [8], Pulsed laser deposition [9], Polyol method [10], etc. From all the above methods, sol-gel spin coating is used in this paper for the preparation of tin oxide thin films.…”

Section: Introductionmentioning

confidence: 99%

Optical Parameters of Nano metric SnO2 Thin Films Deposited via Sol-Gel Spin Coating Technique

Soumya¹

2021

IRJASH

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Thin films of tin oxides were successfully synthesized by using Tin(II)chloride dihydrate and ethanol as precursors. This paper discuss about the optical parameters of the thin films of tin oxide post annealed at 200 0 C. UV-Vis spectroscopy study reveals that the prepared tin oxide thin film shows high transparency (87.5%) and low absorbance and low reflectance in the region of visible spectrum. The band gap of the tin oxide thin film was obtained as 3.59 eV. The average value of refractive index of the thin films of tin oxide was 1.909. The real and imaginary values of dielectric constants were 7.1 ans 0.33 respectively.

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“…Multiple gaps with different size and shape are simulated to analyze the sensing behavior of the devices with randomly distributed gaps. Before the calculation, the Poisson's ratio, Young's modulus and density of ITO are set as 0.35, [ 40 ] 140 GPa [ 41 ] and 7.15 g cm ‐3 , respectively. But the mechanical properties of the nanoscale potassium lithium titanate have rarely been studied.…”

Section: Methodsmentioning

confidence: 99%

Two‐dimensional oxide based pressure sensors with high sensitivity

et al. 2021

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Nanomaterials based pressure sensors have obtained world‐wide research interest due to their promising potential applications in health monitoring, artificial intelligence, and electronic skin (e‐skin). Despite the recent progress in sensitivity and detection range of the pressure sensors, the relatively high thickness of the active films has obstructed their applications for e‐skin and degraded the comfortability as wearable devices. We hereby report for the first time a novel pressure sensor based on two‐dimensional metal oxide nanosheets where the gaps between neighboring nanosheets are adjustable. The pressure sensors show a sensitivity of up to 7.2 × 106 kPa–1, which is the highest value ever reported for a pressure sensor. Additionally, the sensor shows good repeatability and excellent stability. The pressure‐sensing ranges can be tuned by adjusting the coverage of the nanosheet film. This work presents an effective strategy to develop ultrathin pressure sensors.

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Nanomechanical properties of dip coated indium tin oxide films on glass

Cited by 18 publications

References 43 publications

Probing the effects of thermal treatment on the electronic structure and mechanical properties of Ti-doped ITO thin films

Probing the effects of thermal treatment on the electronic structure and mechanical properties of Ti-doped ITO thin films

Optical Parameters of Nano metric SnO2 Thin Films Deposited via Sol-Gel Spin Coating Technique

Two‐dimensional oxide based pressure sensors with high sensitivity

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