Synthesis, Structural and Surface Morphological Characterizations of Tin Dioxide Nanoparticles Via Chemical Route

Ezekoye, B. A.; Ezekoye, V. A.; Ezema, F. I.; Offor, P. O.; Aroh, B. E. Aroh B. E.

doi:10.15373/22778179/oct2013/120

Cited by 3 publications

(7 citation statements)

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“…The band gap value of the CdS film was found increases from (2.25, 2.4, 2.5 and 2.65) eV with increasing deposition times at (1,2,3 and 4) hours, respectively. This behavior is identical to the results of previous researches [10,11,13,14]. The increase in band gap value is due to crystal size decreases below a certain limiting size, associated with its exciton Bohr diameter.…”

Section: The Optical Band Gapsupporting

confidence: 91%

“…A maximum value transmittance at (77%) in the near-infrared region for CdS film at deposition time (1hour) while increased to (82, 83, 86)% for CdS film at deposition time (2,3,4) hours, respectively. The increase in transmittance in the near infrared region shows decrease absorbance as the wavelength increases along the near infra-red region of the spectrum and height absorption in the visible light region for all samples of CdS this result is good agreement with research [13].…”

Section: The Transmission and Absorptionsupporting

confidence: 87%

“…Most CBD films reported are fairly transparent to very transparent, typically between 60 and 90% transparent in the sub-band gap region [10][11][12]. The deposition time of the films increases [13] or decrease [10] the optical transmission, according to deposition time of film. The absorption edge shifts towards higher energy region and increase in the band gap [11, 13,14].…”

Section: Introductionmentioning

confidence: 99%

“…The deposition time of the films increases [13] or decrease [10] the optical transmission, according to deposition time of film. The absorption edge shifts towards higher energy region and increase in the band gap [11, 13,14]. Ali et al related the grain size dependence on the band gap for the films [10].…”

Section: Introductionmentioning

confidence: 99%

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Studying the Effect of Deposition Time on Optical Properties of CdS Thin Films

Al-Wardy

2018

J. Phys.: Conf. Ser.

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Studying the Effect of Deposition Time on Optical Properties of CdS Thin Films R. A. Al-WardyDepartment of clinical laboratory science/college of pharmacy/Al-mustansiriyah university e-mail: dr.rusuladnan@uomustansiriyah.edu.iq Abstract. We have studied in this work the effect of deposition time on the absorption spectra and the optical energy gap of CdS thin film. That prepared by chemical bath deposition method (CBD) on glass substrate at temperature of (80 ± 5)°C. The structural features were examined by X-ray diffraction (XRD) is wurtzite structure for all samples. Transmittance spectra have been recorded in order to determine absorbance, reflectivity, absorption coefficient and the optical constants such as refractive index, extinction coefficient, real and imaginary part of dielectric constant. It was seen that all the parameters under investigation affected by deposition time (1,2 3, and 4) hours.

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Section: The Optical Band Gapsupporting

confidence: 91%

Section: The Transmission and Absorptionsupporting

confidence: 87%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Studying the Effect of Deposition Time on Optical Properties of CdS Thin Films

Al-Wardy

2018

J. Phys.: Conf. Ser.

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“…The refractive-index measurements can have a correlation with the electrical properties of the prepared films. The refractive index (n0) can be determined from the reflectance (R) using the relation [11]:…”

Section: Introductionmentioning

confidence: 99%

Effect of Thickness variation on The Optical Properties of (Poly Vinyl Alcohol : Green Methyl) Films

Mohammed¹

2017

DJPS

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Poly (vinyl alcohol) doped with different Green methyl concentration (4%) by solvent cast method for different thickness the prepare films were 5, 10, 15,and 20 µm. Transmission and absorption spectrum have been recored in order to study the effect of increasing thickness on some opttical constans such as transmittance, reflectance, absorption coefficient, refractive index and extinction coefficient. The film study reveals that all these parameters affect by increasing the thickness. The films show indirect allowed interband transitions that influenced by the thicknesses , the optical energy gap has been increased from about (3.36 eV) for the (5 µm) , (3.39 eV) for the (10 µm) , (3.41 eV) for the (15µm) and (3.45 eV) for the (20 µm) .

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Ethanol-Sensing Characteristics of Tin Oxide (SnO2) Nano-Particle Thin Films Deposited Using Ultrasonic Nebulizer

Sharma¹

2018

SMSJ

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Tin oxide (SnO2 ) nano particle thin film has been deposited by spray pyrolysis technique using ultrasonic nebulizer of chloride solution (SnCl2.2H2O) over the glass substrate. An aqueous chloride solution was converted into a mist form of vapor using ultrasonic nebulizer and deposited over the heated substrate at temperature 300 ± 100C. The XRD and SEM result shows a regular, smooth, excellent morphology and also found polycrystalline in nature which is also evident in XRD analysis. The average grain size of SnO2 particles were found to be in the range of 25 nm to 35 nm depending on the allowed concentration of chloride solution which is calculated from XRD plot using Debye - Sherror formula. The average thickness of the as prepared film was measured of the order of 120 nm. The optical transmittance properties of the SnO2 thin films have been also measured. The films exhibited an average transmittance value of 93% in recorded range of wavelength. Finally the ethanol gas sensing properties of the thin film (0.1 M concentration) was performed and discussed in detail.

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Synthesis, Structural and Surface Morphological Characterizations of Tin Dioxide Nanoparticles Via Chemical Route

Cited by 3 publications

References 1 publication

Studying the Effect of Deposition Time on Optical Properties of CdS Thin Films

Studying the Effect of Deposition Time on Optical Properties of CdS Thin Films

Effect of Thickness variation on The Optical Properties of (Poly Vinyl Alcohol : Green Methyl) Films

Ethanol-Sensing Characteristics of Tin Oxide (SnO2) Nano-Particle Thin Films Deposited Using Ultrasonic Nebulizer

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