Title: Organic solar cells with sensitized phosphorescent absorbing layers
Authors: Rand, Barry P ×
Schols, Sarah
Cheyns, David
Gommans, Hans
Girotto, Claudio
Genoe, Jan
Heremans, Paul
Poortmans, Jef #
Issue Date: Aug-2009
Publisher: Elsevier science bv
Series Title: Organic electronics vol:10 issue:5 pages:1015-1019
Abstract: We demonstrate an increase of the exciton diffusion length (L-D) Of a fluorescent donor layer via the process of sensitized phosphorescence, whereby initially generated singlet excitons are transferred to triplet excitons via a properly chosen dopant molecule. Using a poly(p-phenylene vinylene) host doped with the phosphorescent molecule platinum octaethylporphyrin, L-D increases from 4 +/- 1 to 9 +/- 1 nm for an optimal doping of 5 wt%. As a result of the increased L-D, the photocurrent from the doped layer increases by 40%, By doping with the fluorescent, non-metalated analogue octaethylporphyrin, a reduction in photocurrent is shown, providing further evidence of the sensitized phosphorescence mechanism. (C) 2009 Elsevier B.V. All rights reserved.
ISSN: 1566-1199
Publication status: published
KU Leuven publication type: IT
Appears in Collections:ESAT - MICAS, Microelectronics and Sensors
Associated Section of ESAT - INSYS, Integrated Systems
Electrical Engineering (ESAT) TC, Technology Campus Diepenbeek
Technologiecluster ESAT Elektrotechnische Engineering
× corresponding author
# (joint) last author

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