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antimony film concentration

Morphology and photoresponse of crystalline antimony film ...

2016-09-01· Semiconducting behavior of the antimony film was investigated by Hall measurements at room temperature. In these measurements, the carrier concentration was found of the order of 10 22 cm -3, Hall mobility of about 9.03 cm 2 /Vs and resistivity of about 10 -6 Ω·cm.

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Disposable Injection Molded Conductive Electrodes Modified ...

concentration of the target metals as required), and co-deposition of the antinomy film and the analytes was carried out at º 1.2 V for 240 s under stirring. Then, the solution was allowed to equilibrate in static solution for 10 s and the stripping step was performed by the scanning the

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Morphology and photoresponse of crystalline antimony film ...

XRD peaks of the antimony film grown on mica mostly matched with JCPDF Card. The formation of rhombohedral crystal structures in the film was further confirmed by SEM micrographs and chemical composition analysis. The Hall measurements revealed good electrical conductivity of the film with bulk carrier concentration of the order of 10(22) Omega.cm(3) and mobility of 9.034 cm(2)/Vs. The grown ...

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Voltammetric Determination of Antimony in Natural Waters

The concentration of total antimony in most nat­ ural waters varies in the range 0.01 to 5 ^.g dm-3 The predominant antimony species found in natu­ ral water are: inorganic Sb(III) and Sb(V).

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Effect of antimony dopant on structural and optical ...

Both, pure and doped CdSe thin films with a varying Sb3 +concentration from 0.005 mol % to 5 mol%were prepared by a chemical deposition process":" onto the cleaned glass microslides of the dimensions 24 mm x 75 mm. AR grade cadmium sulphate 00 ml, 1 M) was complexed with sufficient quantity of triethanolamine (TEA).

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Disposable Injection Molded Conductive Electrodes Modified ...

concentration of the target metals as required), and co-deposition of the antinomy film and the analytes was carried out at º 1.2 V for 240 s under stirring. Then, the solution was allowed to equilibrate in static solution for 10 s and the stripping step was performed by the scanning the

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Physical properties of antimony‐doped tin oxide thick ...

But the band gap of the films on soda lime glass substrates depends on the film thickness, and increases from 2.85 to 3.08 eV with increasing thickness from 2250 to 13 000 Å. The Hall mobility and carrier concentration of the films were also measured. The results of x‐ray diffraction analysis and observations by SEM are described.

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Voltammetric Determination of Copper(II) Using Antimony ...

antimony film can be used for determination of copper successfully since the signal for the Sb peak is very small. Obviously from Fig. 1, the height of the copper peak in the presence of

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Determination of Antimony in Soil Samples by Flow-through ...

antimony is a rather rare element in the earth's crust (0.2–0.3 mg/kg [1]). due to its many industrial uses, how- ever, it is one of those elements that show anthropogenic mobilization into the environment. in the last decades the global fluxes of Sb have increased at least 10-fold. This leads to elevated Sb concentrations in soils and exposure to plants, animals and humans. Antimony ...

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Antimony Film Electrode for Electrochemical Stripping ...

2007-10-20· The electrode revealed good linear behavior in the examined concentration range from 20 to 140 μg L -1 for both test metal ions, with a limit of detection (3σ) of 0.7 μg L -1 for Cd (II) and 0.9 μg L -1 for Pb (II) obtained after a 120 s deposition step, and good reproducibility, with a relative standard deviation (RSD) of ±3.6% for Cd (II) and ±6.2% for Pb (II) (60 μg L -1, n = 12).

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Electrochemical Detection of Trace Cu (II) in Macro Algae ...

The antimony peak, at approximately 0.05 V, is seen to diminish as the cadmium(II) and lead(II) concentration increases and almost disappears at concentrations greater than 20 µgL-1. Succesive additions of 10 µgL-1copper(II) was shown to reduce both cadmium(II) and lead(II) oxidation peaks as shown in Figure 1b.

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Antimony-Doped Tin(II) Sulfide Thin Films

2012-08-06· Higher concentrations (∼5%) of antimony did not convert the SnS(Sb) to low-resistivity n-type conductivity, but instead the films retain such a high resistance that the conductivity type could not be determined.

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Antimony Film Electrode for Electrochemical Stripping ...

2007-10-20· The electrode revealed good linear behavior in the examined concentration range from 20 to 140 μg L -1 for both test metal ions, with a limit of detection (3σ) of 0.7 μg L -1 for Cd (II) and 0.9 μg L -1 for Pb (II) obtained after a 120 s deposition step, and good reproducibility, with a relative standard deviation (RSD) of ±3.6% for Cd (II) and ±6.2% for Pb (II) (60 μg L -1, n = 12).

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Electron transport properties of antimony doped SnO 2 ...

By antimony doping tin oxide, SnO 2 :Sb (ATO), below 1.0% Sb concentration, controllable n-type doping was realized. Plasma-assisted molecular beam epitaxy has been used to grow high quality single crystalline epitaxial thin films of unintentionally doped (UID) and Sb-doped SnO 2 on r-plane sapphire substrates. A UID thickness series showed an electron concentration of 7.9×1018cm ...

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Electron transport properties of antimony doped SnO 2 ...

By antimony doping tin oxide, SnO 2 :Sb (ATO), below 1.0% Sb concentration, controllable n-type doping was realized. Plasma-assisted molecular beam epitaxy has been used to grow high quality single crystalline epitaxial thin films of unintentionally doped (UID) and Sb-doped SnO 2 on r-plane sapphire substrates. A UID thickness series showed an electron concentration of 7.9×1018cm ...

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Determination of Antimony (III) in Real Samples by Anodic ...

In a solution of 3.00 M HCl containing the required antimony concentration a deposition potential of −0.70 V was applied for a period of time. The deposition step was performed under stirring. When that time had elapsed, the stirrer was subsequently switched off, and the solution was left to settle for 10 s, after which the voltammogram was recorded by making an anodic sweep from −0.70 V ...

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Anodic oxide films on antimony formed in oxalic acid solutions

Anodic oxide films on antimony formed in oxalic acid solutions E. Lilov, Ch. Girginov, E. Klein* University of Chemical Technology and Metallurgy, 8 St. Kl. Okhridski Blvd., 1756 Sofia, Bulgaria Received February 28, 2013; Revised April 13, 2013 Anodic oxide films on antimony were grown in aqueous solutions of oxalic acid in a large current density and acid concentration range. Under ...

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Method for in situ Preparation of Antimony-doped Silicon ...

2020-01-09· For example, a low concentration in situ antimony-doped silicon film (e.g., 1.0×10 17 cm −3) may be used as a channel region film in a transistor, while 2 While antimony can be doped metallurgically to a concentration greater than 1.0×10 20 cm −3, the active concentration is generally limited to no greater than 5.0×10 19 cm −3. Hence, the term "metallurgical doping concentration ...

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Effect of NaNO 3 concentration on anodic electrochemical ...

Metallic antimony is apt to be oxidized into Sb2O3 within the NaNO3 concentration range of 0–0.48 M. NaSbO3 can be found on the antimony surface when the NaNO3 concentration increases gradually. Insoluable NaSbO3 inhibits the anodic oxidation of antimony due to its shielding effect on the mass transport of the reactants and products. Surface morphology and .

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Determination of Antimony (III) in Real Samples by Anodic ...

The total antimony concentration 1.58 × 10−8± 0.06 × 10−8M (n = 3, α = 0.05) found by the proposed method and the values 1.62 × 10−8± 0.33 × 10−8M (n = 3, α = 0.05) obtained using ICP-MS as reference technique show good agreement.

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The Influence Of Antimony-Doping Contents On The Structure ...

:Sb films with different concentration of antimony (0, 1, 3, 5, 7% wt.) prepared by chemical spray pyrolysis technique at a substrate temperature of (350℃) has been shown in fig. (1), It is seen that the peaks are more broadened and shifted toward the decrease when the increase of antimony doping.

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Anodic Stripping Voltammetric Determination of Copper ...

The antimony film was deposited in situ at the surface of the screen-printed carbon electrode (SPE). The film-forming Sb(III) was added directly to the examined solution. An aliquot of the analyzed sample was pipetted into the electrochemical cell. After that, the following reagents were added: 0.1 ml of 1 M acetate buffer, 0.025 ml of a 0.1 g L -1 Sb(III) solution, and 0.1 ml of 1 M KNO 3 ...

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Growth of Semimetals Bismuth and Antimony Films on ...

Figure 4(a) shows the SEM image of the antimony film. It clearly reveals that zinc substrate was covered with Sb nano- or microparticles. Most of the particles exhibit bowl-shaped morphologies and display size in the range of 100–500 nm and wall thickness of about 80 nm. Higher magnification SEM image of an individual Sb nanobowl in the inset of Figure

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Preparation and Characterization of Antimony Doped Tin ...

Fig. 1 – A schematic diagram of dual source Plasma Assisted Thermal Evaporation for antimony doped tin oxide thin film deposi-tions: 1) Evaporation boat; 2) Source material; 3) Oxygen plasma; 4) Evaporated atoms; 5) Deposited thin film; 6) Substrate; 7) Substrate heater. MN Matching network; RF 13.56 MHz supply The optical transmission of the deposited films are measured in the wavelength ...

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Antimony - Wikipedia

Antimony is a chemical element with the symbol Sb (from Latin: stibium) and atomic number 51. A lustrous gray metalloid, it is found in nature mainly as the sulfide mineral stibnite (Sb 2 S 3). Antimony compounds have been known since ancient times and were powdered for use as medicine and cosmetics, often known by the Arabic name kohl. Metallic antimony was also known, but it was .

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Synthesis of Antimony Doped Amorphous Carbon Films - .

For film deposition, the mixture targets fabricated from carbon and antimony powders was used. The atomic concentration of carbon, hydrogen, and antimony, in the film deposited from the 1.0 mol% Sb containing target were 81, 17, 2 at.%, respectively. These elements were homogeneously distributed in the film. On the structural effect, the average continuous sp 2 carbon bonding networks ...

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Antimony film electrodes for voltammetric determination of ...

2016-10-01· Thirty successive measurements (concentration of trifluralin 1 × 10 − 4 mol L − 1) at one freshly prepared antimony film had acceptable relative standard deviation 5.2%. The process of repeated preparation of antimony film was also investigated by measuring the voltammetric response of trifluralin at five freshly prepared SbFGCEs with higher but still acceptable relative standard ...

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Screening assessment antimony-containing substances ...

Antimony concentration range (%) b Film thickness on skin (cm) c Density (g/cm 3) d Exposure frequency Exposure estimate (mg/kg-bw/day) e; Dermal: Adult (20 +) applying lubricant to car: 12: 7: 0.0156: 0.9: 1/day: 1.7 X 10-2 : a Skin surface area exposed: 12 cm 2 (US EPA 2011) b Maximum antimony concentration in lubricant: 7% (SDS 2016; SDS 2002) c Film thickness on skin: 1.56×10-2 .

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Growth and characterization of antimony doped tin oxide ...

1999-03-01· The optical investigation showed that, depending upon the doping concentration, the antimony doped films had direct allowed transitions in the range 4.13–4.22 eV and indirect allowed transitions in the range 2.54–2.65 eV.

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Effect of antimony dopant on structural and optical ...

Both, pure and doped CdSe thin films with a varying Sb3 +concentration from 0.005 mol % to 5 mol%were prepared by a chemical deposition process":" onto the cleaned glass microslides of the dimensions 24 mm x 75 mm. AR grade cadmium sulphate 00 ml, 1 M) was complexed with sufficient quantity of triethanolamine (TEA).

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