Increased efficiencies on CdTe solar cells via luminescence down-shifting with excitation energy transfer between dyes

Danos, L. and Parel, T. and Markvart, T. and Barrioz, V. and Brooks, W. S. M. and Irvine, S. J. C. (2012) Increased efficiencies on CdTe solar cells via luminescence down-shifting with excitation energy transfer between dyes. Solar Energy Materials and Solar Cells, 98. pp. 486-490. ISSN 0927-0248

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Abstract

The external quantum efficiencies of CdTe solar cells fabricated by the atmospheric pressure metal organic chemical vapour deposition (AP-MOCVD) method have been measured with one and two dye doped luminescence down-shifting (LDS) layers on top. Excitation energy transfer between the dyes is used to extend the absorption ability of the LDS layer to lambda=350 nm and increase the external quantum efficiency (EQE) of the cells for wavelengths lambda <540 nm. The observed increase in the EQE corresponds to a rise in the short circuit current density of 1.88 mA/cm(2) under AM1.5G illumination spectra, which is equivalent to a 10% relative solar cell efficiency increase. A simple model is presented, which accounts for the absorption and photon collection efficiencies of the LDS layer. (C) 2011 Elsevier B.V. All rights reserved.

Item Type:
Journal Article
Journal or Publication Title:
Solar Energy Materials and Solar Cells
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/2100/2105
Subjects:
ID Code:
62817
Deposited By:
Deposited On:
15 Mar 2013 09:01
Refereed?:
Yes
Published?:
Published
Last Modified:
06 May 2020 02:38