The effect of rear earth doping CdS nanostructure on structural, optical and photoconductivity properties

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Isam M. Ibrahim

Abstract

Rare earth elements (Cerium, Lanthanum and Neodymium) doped CdS thin films are prepared using the chemical Spray Pyrolysis Method with temperature 200 oC. The X-ray diffraction (XRD) analysis refers that pure CdS and CdS:Ce, CdS:La and CdS:Nd thin films showed the hexagonal crystalline phase. The crystallite size determined by the Debye-Scherrer equation and the range was (35.8– 23.76 nm), and it was confirmed by field emission scanning electron microscopy (FE-SEM). The pure and doped CdS shows a direct band gap (2.57 to 2.72 eV), which was obtained by transmittance. The room-temperature photoluminescence of pure and doped CdS shows large peak at 431 nm, and two small peaks at (530 and 610 nm). The Current – voltage measurement in dark and illumination (100 mW/cm2, 183 mW/cm2 and 288 mW/cm2) condition. The photocurrent increases and the resistivity decreases with the light intensity increases. So film reveals photoconductivity phenomena suggesting it's useful for optoelectronic applications.

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The effect of rear earth doping CdS nanostructure on structural, optical and photoconductivity properties. IJP [Internet]. 2019 Mar. 1 [cited 2024 Mar. 29];17(40):108-1. Available from: https://ijp.uobaghdad.edu.iq/index.php/physics/article/view/411
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How to Cite

1.
The effect of rear earth doping CdS nanostructure on structural, optical and photoconductivity properties. IJP [Internet]. 2019 Mar. 1 [cited 2024 Mar. 29];17(40):108-1. Available from: https://ijp.uobaghdad.edu.iq/index.php/physics/article/view/411

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