Prospects of back surface field effect in ultra-thin high-efficiency CdS/CdTe solar cells from numerical modeling

Nowshad Amin, M. A. Matin, M. M. Aliyu, M. A. Alghoul, M. R. Karim, Kamaruzzaman Sopian

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

Polycrystalline CdTe shows greater promises for the development of cost-effective, efficient, and reliable thin film solar cells. Results of numerical analysis using AMPS-1D simulator in exploring the possibility of ultrathin, high efficiency, and stable CdS/CdTe cells are presented. The conventional baseline case structure of CdS/CdTe cell has been explored with reduced CdTe absorber and CdS window layer thickness, where 1m thin CdTe and 50 nm CdS layers showed reasonable efficiencies over 15%. The viability of 1μm CdTe absorber layer together with possible back surface field (BSF) layers to reduce minority carrier recombination loss at the back contact in ultra thin CdS/CdTe cells was investigated. Higher bandgap material like ZnTe and low bandgap materials like Sb2Te3 and As2Te3 as BSF were inserted to reduce the holes barrier height in the proposed ultra thin CdS/CdTe cells. The proposed structure of SnO2/Zn2SnO4/CdS/CdTe/As 2Te3/Cu showed the highest conversion efficiency of 18.6% (Voc = 0.92V, Jsc = 24.97mA/cm2, and FF = 0.81). However, other proposed structures such as SnO2/Zn2SnO 4/CdS/CdTe/Sb2Te3/Mo and SnO 2/Zn2SnO4/CdS/CdTe/ZnTe/Al have also shown better stability at higher operating temperatures with acceptable efficiencies. Moreover, it was found that the cells normalized efficiency linearly decreased with the increased operating temperature with relatively lower gradient, which eventually indicates better stability of the proposed ultra thin CdS/CdTe cells.

Original languageEnglish
Article number578580
JournalInternational Journal of Photoenergy
Volume2010
DOIs
Publication statusPublished - 2010

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Solar cells
solar cells
cells
Energy gap
operating temperature
absorbers
AMPS (satellite payload)
Conversion efficiency
Numerical analysis
Simulators
minority carriers
viability
Temperature
simulators
numerical analysis
costs
Costs
gradients
thin films

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Chemistry(all)
  • Atomic and Molecular Physics, and Optics
  • Materials Science(all)

Cite this

Prospects of back surface field effect in ultra-thin high-efficiency CdS/CdTe solar cells from numerical modeling. / Amin, Nowshad; Matin, M. A.; Aliyu, M. M.; Alghoul, M. A.; Karim, M. R.; Sopian, Kamaruzzaman.

In: International Journal of Photoenergy, Vol. 2010, 578580, 2010.

Research output: Contribution to journalArticle

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