Development of CdTe thin film solar cells for military applications

ABDUL-MANAF, N A and DHARMADASA, I (2017). Development of CdTe thin film solar cells for military applications. Defence S&T Technical Bulletin, 10 (2), 129-141.

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Official URL: http://www.stride.gov.my/v1/techbulletin/2017_vol_...

Abstract

This experiment reports the study on CdS/CdTe thin film solar cells for military application. In this work, CdS/CdTe thin film solar cell has been heat-treated with various device structures and chemical treatments in order to activate the properties of CdTe for optimum solar cell device performance. These treatments are such as CdCl2 treatment, CdCl2+CdF2 treatment and CdCl2+CdF2+GaCl2 treatment. These samples were then characterised using XRD, UV-Vis spectroscopy and DC measurements for their structural, optical and electrical properties. XRD characterisations show the presence of fluoride in ppm in the treatment demonstrated a rearrangement in the orientation of the crystallite and increased the (220) and (311) peaks to form a polycrystalline structure. PEC measurements demonstrated that all of CdTe films become p-type after being treated with CdCl2 and CdCl2+CdF2. Contrary, CdTe treated with CdCl2+CdF2+GaCl3 changes the p-CdTe at Vg≥706 mV into n-type due to the effect of Ga which dissolved the Te precipitations to the surface.The optimum condition was obtained when the samples annealed at 450°C in the presence of CdCl2+CdF2. Further study demonstrates that the best solar cell efficiency is obtained when using CdTe thin films treated with CdCl2+CdF2.

Item Type: Article
Research Institute, Centre or Group: Materials and Engineering Research Institute > Thin Films Research Centre > Electronic Materials and Sensors Research Group
Depositing User: Carmel House
Date Deposited: 31 Aug 2017 09:08
Last Modified: 31 Aug 2017 09:08
URI: http://shura.shu.ac.uk/id/eprint/16619

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