The optical constants of thin evaporated films of cadmium and zinc sulphides

Khawaja, E. E.; Tomlin, S G

doi:10.1088/0022-3727/8/5/019

Cited by 83 publications

(32 citation statements)

References 17 publications

(18 reference statements)

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“…It has been reported that the intrinsic quality of CdS and CdSe films improves if deposited at elevated substrate temperatures. 17,18 The present observations show that the action of the ultrasonic vibrations of the substrate is similar to the case of depositing at elevated substrate temperature.…”

Section: B On Cdse Filmssupporting

confidence: 71%

Electrical properties of CdS and CdSe films deposited on vibrating substrates

Mohanchandra

Uchil

1998

Journal of Applied Physics

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Polycrystalline cadmium sulphide (CdS) and cadmium selenide (CdSe) films are deposited on glass substrates kept at room temperature using the method of resistive heating. In this article, the influence of substrate vibrations at ultrasonic frequency during deposition on the electrical properties of the films is discussed. The resistivity of the films has been studied as a function of temperature, and the activation energies have been determined for the films deposited on a vibrating substrate and on a static substrate. It is found that the carrier concentration is less in the case of the films deposited on vibrating substrate although the activation energy remains unaltered. This result is in agreement with the carrier concentration determined from Hall effect measurements on these films. The vibration of the substrate leads to better stoichiometry and crystallinity in the films as confirmed by x-ray diffraction studies.

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Section: B On Cdse Filmssupporting

confidence: 71%

Electrical properties of CdS and CdSe films deposited on vibrating substrates

Mohanchandra

Uchil

1998

Journal of Applied Physics

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“…This wavelength lies below the band gap and ␣р10 4 cm Ϫ1 is noticeably smaller than it is at 476.5 nm. 5,6 Nonetheless only a weak transmission of Ϸ2% was measured and almost identical behavior to that in Fig. 2 was observed.…”

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confidence: 77%

Angular dependence of the reflectance and transmittance of CdS films formed by laser ablation

Dushkina¹

1998

Applied Physics Letters

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Articles you may be interested inPhotoluminescence study of polycrystalline photovoltaic CdS thin film layers grown by close-spaced sublimation and chemical bath deposition J. Appl. Phys. 105, 064515 (2009); 10.1063/1.3074504 Water soluble CdS nanoparticles with controllable size prepared via femtosecond laser ablationThe dependence of reflectance and transmittance on the angle of incidence and the polarization of visible light was measured for thin (Ϸ2 m) CdS films formed by laser ablation. The experiments were carried out at 300 K with argon and He-Ne lasers. In the blue and green spectral ranges, the experiments were described straightforwardly by the theoretical approach for highly absorptive materials, omitting the film thickness. For red light, the sample represents dielectric material and multiple reflections must be considered to fit the experiments. Furthermore, it is shown that the angular-dependent features of red light are an accurate tool to determine the film thickness.

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“…The comparison of standard and observed data is presented in Table 2. This shows a preferred orientation in film growth along (111) plane [19,20]. The grain size of these films was estimated using Scherrer formula by El-Kadry [21].…”

Section: Resultsmentioning

confidence: 99%

Optical Properties of Polycrystalline Zinc Selenide Thin Films

Khairnar¹,

Behere²,

Pawar³

2012

MSA

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Thin films of ZnSe have been deposited onto glass substrates at 373 K by thermal evaporation technique. The X-ray diffractogram confirmed that ZnSe has cubic type crystal structure. The lattice parameters of thin films are almost matching with the JCPDS 5 - 552 data for Zinc Selenide. The transmittance and reflectance have been measured at normal and near normal incidence, respectively, in the spectral range 200 - 2500 nm. The dependence of absorption coefficient, α in the photon energy have been determined. Analysis of the result showed that films of different thicknesses, direct transition occurs with band gap energies ranges from 2.2 to 2.6 eV. Refractive indices and extinction coefficients have been evaluated in the above spectral range

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The optical constants of thin evaporated films of cadmium and zinc sulphides

Cited by 83 publications

References 17 publications

Electrical properties of CdS and CdSe films deposited on vibrating substrates

Electrical properties of CdS and CdSe films deposited on vibrating substrates

Angular dependence of the reflectance and transmittance of CdS films formed by laser ablation

Optical Properties of Polycrystalline Zinc Selenide Thin Films

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