scholarly journals Annealing and surface treatment effect on the optical and electrical properties of n-type CdS binary compound semiconductors

2020 ◽  
Vol 4 (3) ◽  
Author(s):  
Olajide Olusola ◽  
Olufemi Olusola
Keyword(s):  
Thin Films ◽  
Electrical Properties ◽  
Absorption Edge ◽  
Binary Compound ◽  
Optical And Electrical Properties ◽  
Energy Bandgap ◽  
Heat Treated ◽  
Cathodic Voltage ◽  
Cds Thin Films ◽  
Cdcl2 Treatment

The preparation of CdS thin films were actualised with electrodeposition technique using cathodic voltage of 1200 milli – Volts (mV). The optical and electrical properties of three different classes of CdS semiconductors namely as – deposited CdS layers (AD-CdS), CdS layers heat-treated in air without any chemical treatment (HT-CdS) and CdS layers treated with CdCl2 and annealed in air (CC-CdS) have been investigated in this work. Results from optical analysis showed that AD-CdS layers have the least absorption edge and highest energy bandgap. Annealing the CdS thin films without and with CdCl2 treatment brings the energy bandgap to same value of ~2.42 eV. The main distinction between the HT- and CC-CdS layers is that the absorption edge of CC-CdS films is sharper than the HT-CdS. Results from electrical analysis revealed that the magnitude of photo-electro-chemical (PEC) cell signals which give a clue about the doping concentration of the semiconductor material is greater in CC-CdS layers than in AD- and HT-CdS layers.Keywords: AD-CdS, HT-CdS, CC-CdS, Energy Bandgap, Absorption Edge, PEC Cell Signal.

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

2013 ◽  
Vol 557 ◽  
pp. 53-59 ◽  
Author(s):  
A. Rmili ◽  
F. Ouachtari ◽  
A. Bouaoud ◽  
A. Louardi ◽  
T. Chtouki ◽  
...  
Keyword(s):  
Thin Films ◽  
Electrical Properties ◽  
Spray Pyrolysis ◽  
Optical And Electrical Properties ◽  
Cds Thin Films

scholarly journals Investigations on the structural, morphological, optical and electrical properties of undoped and nanosized Zn-doped CdS thin films prepared by a simplified spray technique

2014 ◽  
Vol 32 (4) ◽  
pp. 652-660 ◽  
Author(s):  
M. Anbarasi ◽  
V. Nagarethinam ◽  
A. Balu
Keyword(s):  
Thin Films ◽  
Electrical Properties ◽  
Doping Level ◽  
Spray Pyrolysis Technique ◽  
Hexagonal Phase ◽  
Optical And Electrical Properties ◽  
Zn Doping ◽  
Glass Substrates ◽  
Cds Thin Films ◽  
Cds Film

AbstractCdS and Zn-doped CdS (CdS:Zn) thin films have been deposited on glass substrates by spray pyrolysis technique using a perfume atomizer. The influence of Zn incorporation on the structural, morphological, optical and electrical properties of the films has been studied. All the films exhibit hexagonal phase with (0 0 2) as preferential orientation. A shift of the (0 0 2) diffraction peak towards higher diffraction angle is observed with increased Zn doping. The optical studies confirmed that the transparency increases as Zn doping level increases and the film coated with 2 at.% Zn doping has the maximum transmittance of about 90 %. The sheet resistance (Rsh) decreases as the Zn-doping level increases and a minimum value of 1.113 × 103 Ω/sq is obtained for the film coated with 8 at.% Zn dopant. The CdS film coated with 8 at.% Zn dopant has the best structural, morphological and electrical properties.

Effect of annealing time on optical and electrical properties of CdS thin films

2018 ◽  
Author(s):  
Vanshika Soliya ◽  
Digisha Tandel ◽  
Chandani Patel ◽  
Kinjal Patel
Keyword(s):  
Thin Films ◽  
Electrical Properties ◽  
Annealing Time ◽  
Optical And Electrical Properties ◽  
Cds Thin Films
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