Hybrid Structure for Solar Cells Based on SWCNT/CdS

Abstract:

Recently, we considered the application of carbon nanotubes as the buffer layer between the CdS and Cu (In,Ga)Se₂ thin film solar cells. In this work the structure of a p-n heterojunction solar cell is analyzed including the single walled carbon nanotubes as the absorber and CdS as n-type semiconductor window layer. The interface and current-voltage characteristics of this proposed structure are studied exerting the general formulation of the p-n heterojunction solar cells proposed by Fonash. We propose that SWCNTs/CdS heterojunction solar cell can overlap with a main part of the sunlight spectrum leading to improve efficiency and short circuit current. The interesting property of such devices is that the light can inter to the device from the absorber as carbon nanotubes are transparent semiconductor nanostructures. The results of this study can be extended to graphene nanolayers as it has been extensively studied by the PV community in recent years.

• Periodical: Nano Hybrids (Volume 8)
• Pages: 15-26
• DOI: https://doi.org/10.4028/www.scientific.net/NH.8.15
• Online since: December 2014
• Authors: M. Houshmand, M.H. Zandi, Nima E. Gorji*
• Keywords: CdS, Current-voltage characteristics, Heterostructures Solar Cell, Nanotubes

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