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Proceedings Paper

Exploring the exciton dissociation process at a donor-acceptor heterojunction in both time and space via an induced Stark shift
Author(s): Noel C. Giebink; Barry P. Rand; David Cheyns; Jan Genoe
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Paper Abstract

The dissociation of excitons at a donor-acceptor interface in organic photovoltaic devices is an important but poorly understood process that takes place over multiple length and time scales. Here, we introduce a method to resolve photoinduced charge movement at an organic heterojunction in both time and space through observation of the Stark shift induced in a nearby J-aggregate probe layer. Using ultrafast transient absorption measurements, we show that this technique provides an opportunity to quantify the recombination and separation dynamics of geminate charge pairs over the entire sub-picosecond to millisecond range of relevant time scales.

Paper Details

Date Published: 30 April 2012
PDF: 9 pages
Proc. SPIE 8435, Organic Photonics V, 84350L (30 April 2012); doi: 10.1117/12.924154
Show Author Affiliations
Noel C. Giebink, The Pennsylvania State Univ. (United States)
Argonne National Lab. (United States)
Barry P. Rand, IMEC (Belgium)
David Cheyns, IMEC (Belgium)
Jan Genoe, IMEC (Belgium)


Published in SPIE Proceedings Vol. 8435:
Organic Photonics V
Barry P. Rand; Chihaya Adachi; Volker van Elsbergen, Editor(s)

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