Synthesis, characterization and dielectric properties of SnO2 thin films

Yıldırım, Mehmet Ali; Yıldırım, Sümeyra Tuna; Sakar, Emine Fedakar; Ateş, Aytunç

doi:10.1016/j.saa.2014.05.035

Cited by 66 publications

(18 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, the post-deposition annealing was found to increase the crystallite size. Ali Yıldırım et al [13] and Yu et al [17] have reported a similar improvement in the crystallite size of SnO 2 after annealing. The highest crystallite size reported in these two cases was about 20 nm.…”

Section: Structural Analysismentioning

confidence: 66%

“…Tin oxide (SnO 2 ) is one of such earth abundant and nontoxic IV-VI material known for its transparency in visible region and a wide bandgap (3.5 to 4.0 eV) [1]. Due to its high absorption co-efficient in UV region and n-type conductivity, SnO 2 has many potential applications such as gas sensors [2], window layers in solar cells, photodetectors [3][4][5] etc The SnO 2 nano materials including thin films have been prepared by several physical and chemical routes such as chemical bath deposition [6], dip coating [7], sol-gel [8], thermal evaporation [9], Spray pyrolysis [10] pulsed laser deposition (PLD) [11], SILAR [12][13][14] etc Among these techniques, SILAR has proved to be a simple and cost-effective route for the synthesis of good quality SnO 2 films as it does not require complex setups and vacuum environment [15]. Several efforts have been made in the past to synthesize SnO 2 using SILAR and other techniques.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The effect of precursor concentration and post-deposition annealing on the optical and micro-structural properties of SILAR deposited SnO₂ films

Kumar

Rao

2020

Mater. Res. Express

View full text Add to dashboard Cite

Uniform and well-adherent SnO 2 thin films, with thickness ranging from 60 nm to 6 μm, were deposited on borosilicate glass substrate by Successive Ionic Layer Adsorption and Reaction (SILAR) technique. A micro-controlled SILAR unit was employed to precisely monitor the deposition conditions. The effect of precursor concentration and post-deposition annealing on the micro-structural and optical properties of SnO 2 thin films were studied in detail. The films were found to possess tetragonal rutile structure. The crystallite size of the films increased with solution molarity. Microstructural properties were analyzed using Scherrer, Modified Scherrer, Williamsons-Hall and Size-Strain plot techniques. Different optical properties such as band gap, skin depth, extinction coefficient, Urbach energy etc were determined. The postdeposition annealing at a moderate temperature of 573 K was found to enhance the crystallite size of the films while the density of the defect energy states reduced.

show abstract

Section: Structural Analysismentioning

confidence: 66%

Section: Introductionmentioning

confidence: 99%

The effect of precursor concentration and post-deposition annealing on the optical and micro-structural properties of SILAR deposited SnO₂ films

Kumar

Rao

2020

Mater. Res. Express

View full text Add to dashboard Cite

show abstract

“…where E fb is the flat band potential and E, q, A, ε, e 0 and N d are the external applied potential, the elementary charge, the area of the metal contacts, the dielectric constant, the vacuum permittivity, and the carrier concentration, respectively. The optical static dielectric constant ε is equal to 7.1 [31] or 10 [32]. The flat potential E fb is obtained as −0.37, −0.16 V versus Ag/AgCl for Sn-1 and Sn-2, respectively.…”

Section: Resultsmentioning

confidence: 99%

SnO_x@β–SnO heterostructures and their enhanced photocurrent in photoelectrochemical cell

Zheng

Zeng

Xia

et al. 2020

Mater. Res. Express

View full text Add to dashboard Cite

To improve the effective separation of the photogenerated electrons and holes, SnO x @β-SnO composites on titanium meshes were prepared by using a standard one-step hydrothermal procedure. As photoanodes in photoelectrochemical cell, the SnO x @β-SnO composites exhibited a photocurrent density of 150 μA cm −2 at 0.0 V versus Ag/AgCl under visible light illumination. The improved photocurrent can be explained as, the Sn 2+ 5s impurity states in SnO 2 have a band gap energy of 2.24 eV, SnO x @β-SnO composites construct a type-II heterojunction. And titanium meshes have a good conductivity, which is beneficial to transferring electron from the conduction band of SnO 2 to external circuit. Furthermore, the SnO x @β-SnO heterostructures have a larger electrochemical specific surface area, and stronger light absorption from 350-800 nm.

show abstract

“…The various forms of SnO 2 -based nanostructures are continuously investigated for their optical and electrical properties [19][20][21][22][23]. In 2007, an international research team from Turkey and Israel examined the optical properties of thin SnO 2 films produced by the filtered vacuum arc deposition (FVAD) method [24].…”

Section: Introductionmentioning

confidence: 99%

Study of optical and dielectric constants of hybrid SnO2 electrospun nanostructures

2020

View full text Add to dashboard Cite

The aim of this paper was to prepare SnO 2 nanowires using electrospinning and calcination processes from a poly(vinylpyrrolidone), dimethylformamide, ethanol and tin(IV) chloride pentahydrate solution. The composite PVP/SnCl 4 nanofibers obtained via electrospinning method were dried and calcined in a vacuum to remove the polymer matrix at a temperature of 500 °C for 10 h. Three types of nanowires with a polymer to precursor ratios of 2:1, 1:1, 1:3 were produced. The morphology and chemical composition of as-spun PVP/SnCl 4 nanofibers and SnO 2 nanowires obtained after heat treatment were carried out using a scanning electron microscope (SEM) with an energy-dispersive spectrometer (EDX). The Fourier-transform infrared spectroscopy (FTIR) spectra of the prepared nanomaterials were also investigated. To determine the topography of PVP/SnCl 4 nanofibrous mats, an atomic force microscope (AFM) was used. A 100-fold measurement of the nanowire size showed that, depending on the amount of precursor in the spinning solution, nanowires with diameters ranging from 20 to 260 nm were obtained. The optical property analysis was performed on the basis of absorbance spectra recorded over UV-Vis spectral range. The complex refractive index n and complex dielectric permeability ε of obtained tin oxide nanowires were determined as a function of the radiation energy. Depending on the precursor content in spinning solution, the one-dimensional SnO 2 nanostructures were characterised by a refractive index in the range of 1.51-1.56, whereas the dielectric constant ranged from 2.26 to 2.30. The optical properties and the structure of one-dimensional SnO 2 nanomaterials allow to use this type of materials in the construction of novel type photovoltaic cells and electronic devices.

show abstract

Synthesis, characterization and dielectric properties of SnO2 thin films

Cited by 66 publications

References 27 publications

The effect of precursor concentration and post-deposition annealing on the optical and micro-structural properties of SILAR deposited SnO₂ films

The effect of precursor concentration and post-deposition annealing on the optical and micro-structural properties of SILAR deposited SnO₂ films

SnO_x@β–SnO heterostructures and their enhanced photocurrent in photoelectrochemical cell

Study of optical and dielectric constants of hybrid SnO2 electrospun nanostructures

Contact Info

Product

Resources

About

Synthesis, characterization and dielectric properties of SnO2 thin films

Cited by 66 publications

References 27 publications

The effect of precursor concentration and post-deposition annealing on the optical and micro-structural properties of SILAR deposited SnO2 films

The effect of precursor concentration and post-deposition annealing on the optical and micro-structural properties of SILAR deposited SnO2 films

SnO x @β–SnO heterostructures and their enhanced photocurrent in photoelectrochemical cell

Study of optical and dielectric constants of hybrid SnO2 electrospun nanostructures

Contact Info

Product

Resources

About

The effect of precursor concentration and post-deposition annealing on the optical and micro-structural properties of SILAR deposited SnO₂ films

The effect of precursor concentration and post-deposition annealing on the optical and micro-structural properties of SILAR deposited SnO₂ films

SnO_x@β–SnO heterostructures and their enhanced photocurrent in photoelectrochemical cell