Increased efficiencies on CdTe solar cells via luminescence down-shifting with excitation energy transfer between dyes
Increased efficiencies on CdTe solar cells via luminescence down-shifting with excitation energy transfer between dyes
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 ?=350 nm and increase the external quantum efficiency (EQE) of the cells for wavelengths ?<540 nm. The observed increase in the EQE corresponds to a rise in the short circuit current density of 1.88 mA/cm2 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.
486-490
Danos, Lefteris
c831e137-37b9-42cc-ab8c-49de31038922
Parel, Thomas
efb564c5-c382-466b-9c65-4d098b217fa7
Markvart, Tomas
f21e82ec-4e3b-4485-9f27-ffc0102fdf1c
Barrioz, Vincent
56edf13a-1bed-4e5b-bc03-2c7de8426d15
Brooks, W.S.M.
37856ac7-4f89-4961-b146-155902875e8a
Irvine, S.J.C.
97489e81-c646-4576-965c-f785548d7ba5
March 2012
Danos, Lefteris
c831e137-37b9-42cc-ab8c-49de31038922
Parel, Thomas
efb564c5-c382-466b-9c65-4d098b217fa7
Markvart, Tomas
f21e82ec-4e3b-4485-9f27-ffc0102fdf1c
Barrioz, Vincent
56edf13a-1bed-4e5b-bc03-2c7de8426d15
Brooks, W.S.M.
37856ac7-4f89-4961-b146-155902875e8a
Irvine, S.J.C.
97489e81-c646-4576-965c-f785548d7ba5
Danos, Lefteris, Parel, Thomas and Markvart, Tomas et al.
(2012)
Increased efficiencies on CdTe solar cells via luminescence down-shifting with excitation energy transfer between dyes.
Solar Energy Materials and Solar Cells, 98, .
(doi:10.1016/j.solmat.2011.11.009).
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 ?=350 nm and increase the external quantum efficiency (EQE) of the cells for wavelengths ?<540 nm. The observed increase in the EQE corresponds to a rise in the short circuit current density of 1.88 mA/cm2 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.
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e-pub ahead of print date: 2 December 2011
Published date: March 2012
Organisations:
Engineering Mats & Surface Engineerg Gp
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Local EPrints ID: 334188
URI: http://eprints.soton.ac.uk/id/eprint/334188
ISSN: 0927-0248
PURE UUID: 071bf584-602f-49eb-929b-6508617c2827
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Date deposited: 06 Mar 2012 13:04
Last modified: 14 Mar 2024 10:33
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Contributors
Author:
Lefteris Danos
Author:
Thomas Parel
Author:
Vincent Barrioz
Author:
W.S.M. Brooks
Author:
S.J.C. Irvine
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