Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
}
TY - JOUR
T1 - Increased efficiencies on CdTe solar cells via luminescence down-shifting with excitation energy transfer between dyes
AU - Danos, L.
AU - Parel, T.
AU - Markvart, T.
AU - Barrioz, V.
AU - Brooks, W. S. M.
AU - Irvine, S. J. C.
PY - 2012/3
Y1 - 2012/3
N2 - 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.
AB - 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.
KW - INCIDENT
KW - Cdte solar cells
KW - Luminescence down-shifting
KW - PHOTON COLLECTION
KW - Excitation energy transfer
KW - WAVELENGTH
UR - http://www.scopus.com/inward/record.url?scp=84855300495&partnerID=8YFLogxK
U2 - 10.1016/j.solmat.2011.11.009
DO - 10.1016/j.solmat.2011.11.009
M3 - Journal article
VL - 98
SP - 486
EP - 490
JO - Solar Energy Materials and Solar Cells
JF - Solar Energy Materials and Solar Cells
SN - 0927-0248
ER -