NickelMaghrebV1, Main, Exploration, bibRecord, 000181

Structural, optical and electrical properties of Ni-doped CdS thin films prepared by spray pyrolysis

Identifieur interne : 000181 ( Main/Exploration ); précédent : 000180; suivant : 000182

Structural, optical and electrical properties of Ni-doped CdS thin films prepared by spray pyrolysis

Auteurs : A. Rmili [Maroc] ; F. Ouachtari [Maroc] ; A. Bouaoud [Maroc] ; A. Louardi [Maroc] ; T. Chtouki [Maroc] ; B. Elidrissi [Maroc] ; H. Erguig [Maroc]

Source :

Journal of alloys and compounds [ 0925-8388 ] ; 2013.

RBID : Pascal:13-0129307

Descripteurs français

Pascal (Inist)
- Spectre absorption, Spectre visible, Addition nickel, Dépôt projection, Dopage, Concentration impureté, Conductivité électrique, Diffraction RX, Orientation préférentielle, Mode opératoire, Microstructure, Polycristal, Sulfure de cadmium, Couche mince, CdS, Pyrolyse par projection.
Wicri :
- topic : Dopage.

English descriptors

KwdEn :
- Absorption spectra, Cadmium sulfide, Doping, Electrical conductivity, Impurity density, Microstructure, Nickel additions, Operating mode, Polycrystals, Preferred orientation, Spray coatings, Spray pyrolysis, Thin films, Visible spectra, XRD.

Abstract

Un-doped and Ni-doped cadmium sulphide (Ni-CdS) thin films were prepared by spray pyrolysis technique using perfume atomizer, from aqueous solution of hydrated cadmium chloride (CdCl₂.H₂O) and thiourea (CS(NH₂)₂ as sources of cadmium and sulphur ions respectively. We used hexahydrated nickel chloride (NiCl₂.6H₂O) as the dopant. The films were deposited on heated amorphous glass substrates at 400 °C. The effect of the [Ni]/[Cd] ratio on the structural, morphological, optical and electrical properties of these films was investigated. X-ray diffraction (XRD) studies revealed that all the deposited films (un-doped and Ni-doped CdS) were polycrystalline with hexagonal structure and exhibited [101] preferential orientation. The scanning electron microscopy (SEM) images showed a dense surface structure composed of crystallites whose average size decreases when the [Ni]/[Cd] ratio increases. The optical study showed that all the films were highly transparent. The transmittance in the visible region varies between 70% and 85%, depending on the dopant concentration. The film obtained with the [Ni]/[Cd] ratio equal to 4 at.% Ni showed minimum resistivity of 1.3 x 10⁵ Ω cm at room temperature.

Affiliations:

Maroc

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Le document en format XML

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<series><title level="j" type="main">Journal of alloys and compounds</title>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Absorption spectra</term>
<term>Cadmium sulfide</term>
<term>Doping</term>
<term>Electrical conductivity</term>
<term>Impurity density</term>
<term>Microstructure</term>
<term>Nickel additions</term>
<term>Operating mode</term>
<term>Polycrystals</term>
<term>Preferred orientation</term>
<term>Spray coatings</term>
<term>Spray pyrolysis</term>
<term>Thin films</term>
<term>Visible spectra</term>
<term>XRD</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr"><term>Spectre absorption</term>
<term>Spectre visible</term>
<term>Addition nickel</term>
<term>Dépôt projection</term>
<term>Dopage</term>
<term>Concentration impureté</term>
<term>Conductivité électrique</term>
<term>Diffraction RX</term>
<term>Orientation préférentielle</term>
<term>Mode opératoire</term>
<term>Microstructure</term>
<term>Polycristal</term>
<term>Sulfure de cadmium</term>
<term>Couche mince</term>
<term>CdS</term>
<term>Pyrolyse par projection</term>
</keywords>
<keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Dopage</term>
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<front><div type="abstract" xml:lang="en">Un-doped and Ni-doped cadmium sulphide (Ni-CdS) thin films were prepared by spray pyrolysis technique using perfume atomizer, from aqueous solution of hydrated cadmium chloride (CdCl<sub>2</sub>
.H<sub>2</sub>
O) and thiourea (CS(NH<sub>2</sub>
)<sub>2</sub>
 as sources of cadmium and sulphur ions respectively. We used hexahydrated nickel chloride (NiCl<sub>2</sub>
.6H<sub>2</sub>
O) as the dopant. The films were deposited on heated amorphous glass substrates at 400 °C. The effect of the [Ni]/[Cd] ratio on the structural, morphological, optical and electrical properties of these films was investigated. X-ray diffraction (XRD) studies revealed that all the deposited films (un-doped and Ni-doped CdS) were polycrystalline with hexagonal structure and exhibited [101] preferential orientation. The scanning electron microscopy (SEM) images showed a dense surface structure composed of crystallites whose average size decreases when the [Ni]/[Cd] ratio increases. The optical study showed that all the films were highly transparent. The transmittance in the visible region varies between 70% and 85%, depending on the dopant concentration. The film obtained with the [Ni]/[Cd] ratio equal to 4 at.% Ni showed minimum resistivity of 1.3 x 10<sup>5</sup>
 Ω cm at room temperature.</div>
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Structural, optical and electrical properties of Ni-doped CdS thin films prepared by spray pyrolysis

Structural, optical and electrical properties of Ni-doped CdS thin films prepared by spray pyrolysis

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