Morphology dependent electron transport in an n-type electron accepting small molecule for solar cell applications

Karsten B Krueger; Paul E Schwenn; Ke Gui; Almantas Pivrikas; Paul Meredith; Paul L Burn

doi:10.1063/1.3556280

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Morphology dependent electron transport in an n-type electron accepting small molecule for solar cell applications

Journal article

Peer reviewed

Morphology dependent electron transport in an n-type electron accepting small molecule for solar cell applications

Karsten B Krueger, Paul E Schwenn, Ke Gui, Almantas Pivrikas, Paul Meredith and Paul L Burn

Applied Physics Letters, Vol.98(8), pp.1-3

2011

DOI: https://doi.org/10.1063/1.3556280

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Abstract

We report on the charge transport properties of a simple solution processable small-molecule electron acceptor, 2-[{7-(9,9-di- n -propyl- 9H -fluoren-2-yl)benzo [c] [1,2,5]thiadiazol-4-yl}methylene]malononitrile (K12), designed for use in bulk-heterojunction organic photovoltaic cells. It was found that the molecular order in as-cast films can be dramatically improved by annealing at moderate temperatures (60 °C), which leads to a greatly enhanced electron mobility. Using the photoinduced charge extraction in linearly increasing voltage technique we measured bulk electron mobilities to be as high as 10-4 cm2 V-1 s-1, comparable with some of the best nonfullerene acceptor materials reported to date.

Details

Title: Morphology dependent electron transport in an n-type electron accepting small molecule for solar cell applications
Authors: Karsten B Krueger (Author) - The University of Queensland
Paul E Schwenn (Author) - The University of Queensland
Ke Gui (Author) - The University of Queensland
Almantas Pivrikas (Author) - Johannes Kepler University of Linz
Paul Meredith (Corresponding Author) - The University of Queensland
Paul L Burn (Author) - The University of Queensland
Publication details: Applied Physics Letters, Vol.98(8), pp.1-3
Publisher: A I P Publishing LLC
Date published: 2011
DOI: 10.1063/1.3556280
ISSN: 0003-6951
Grants: Dendritic Organic Semiconductors, FF0668728, Australian Research Council (Australia, Canberra) - ARC
Grant note: Queensland State Government PM Smart State Senior Fellow, and the University of Queensland Strategic Initiative-Centre for Organic Photonics and Electronics.
Organisation Unit: Thompson Institute
Language: English
Record Identifier: 99451363702621
Output Type: Journal article

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Collaboration types: Domestic collaboration; International collaboration
Web Of Science research areas: Physics, Applied

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