Analysis of electrodeposited CdTe thin films grown using cadmium chloride precursor for applications in solar cells

OJO, A. A. and DHARMADASA, I (2017). Analysis of electrodeposited CdTe thin films grown using cadmium chloride precursor for applications in solar cells. Journal of Materials Science: Materials in Electronics, 28 (19), 14110-14120.

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Official URL: https://link.springer.com/article/10.1007/s10854-0...
Link to published version:: 10.1007/s10854-017-7264-0

Abstract

Deposition of cadmium telluride (CdTe) from cadmium chloride (CdCl2) and tellurium oxide has been achieved by electroplating technique using two-electrode configuration. Cyclic voltammetry shows that near-stoichiometric CdTe is achievable between 1330 and 1400 mV deposition voltage range. The layers grown were characterised using X-ray diffraction (XRD), UV–Visible spectrophotometry, scanning electron microscopy (SEM), energy-dispersive X-ray analysis (EDX), photoelectrochemical (PEC) cell and DC conductivity measurements. The XRD shows that the electrodeposited CdTe layer is polycrystalline in nature. The UV–Visible spectrophotometry shows that the bandgap of both as-deposited and heat-treated CdTe films are in the range of (1.44–1.46) eV. The SEM shows grain growth after CdCl2 treatment, while, the EDX shows the effect of growth voltage on the atomic composition of CdTe layers. The PEC results show that both p- and n-type CdTe can be electrodeposited and the DC conductivity reveals that the high resistivity is at the inversion growth voltage (Vi) for the as-deposited and CdCl2 treated layers.

Item Type: Article
Research Institute, Centre or Group: Materials and Engineering Research Institute > Thin Films Research Centre > Electronic Materials and Sensors Research Group
Identification Number: 10.1007/s10854-017-7264-0
Depositing User: Jill Hazard
Date Deposited: 02 Jun 2017 15:28
Last Modified: 14 Sep 2017 11:24
URI: http://shura.shu.ac.uk/id/eprint/15824

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