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n African Journal of Science, Technology, Innovation and Development - A numerical study of high efficiency ultra-thin CdS/CIGS solar cells

Volume 8, Issue 4
  • ISSN : 2042-1338
  • E-ISSN: 2042-1346
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Abstract

This work aims to improve the performance of solar cells with structure SnO2/CdS/CIGS/Mo by using the solar cellcapacitance simulator (SCAPS-1D). Our idea is to insert the SnS layer between the absorber layer CIGS and the Mo(molybdenum) back contact. A maximum conversion efficiency of 24.45% ( = 0.78 V, = 38.66 mA/cm2, FF = 0.80) was achieved with 1 μm-CIGS absorber layer, 50 nm-CdS buffer layer, 200 nm of ZnO window layer and 300 nm of SnS BSF layer. This study shows that ultra-thin CIGS solar cells with a BSF layer give better results compared to the work of Gloeckler (2005), which presented an efficiency of 19.62% (( = 0.61 V, = 39.23 mA/cm2, FF = 0.81) with 3 μm thickness of CIGS in the structure ZnO/CdS/CIGS/Mo. In addition to this, the cells' stability with temperature was studied and analysed.

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/content/aa_ajstid/8/4/EJC198499
2016-01-01
2019-10-23

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