Please use this identifier to cite or link to this item: http://lib.jncasr.ac.in:8080/jspui/handle/10572/1988
Title: A Comparison of Charge Separation Dynamics in Organic Blend Films Employing Fullerene and Perylene Diimide Electron Acceptors
Authors: Shoaee, Safa
Deledalle, Florent
Tuladhar, Pabitra Shakya
Shivanna, Ravichandran
Rajaram, Sridhar
Narayan, K. S.
Durrant, James R.
Keywords: Physical Chemistry
Nanoscience & Nanotechnology
Materials Science
Atomic, Molecular & Chemical Physics
Solar-Cells
Efficiency
Photogeneration
Energy
Dimer
Issue Date: 2015
Publisher: American Chemical Society
Citation: Journal of Physical Chemistry Letters
6
1
Shoaee, S.; Deledalle, F.; Tuladhar, P. S.; Shivanna, R.; Rajaram, S.; Narayan, K. S.; Durrant, J. R., A Comparison of Charge Separation Dynamics in Organic Blend Films Employing Fullerene and Perylene Diimide Electron Acceptors. Journal of Physical Chemistry Letters 2015, 6 (1), 201-205.
Abstract: We report a comparison of charge carrier dynamics and device performance for low band gap polymer PBDTTT-CT in blends with the fullerene acceptor PC71BM and a PDI derivative with similar electron affinities. Charge separation and recombination dynamics are found to be remarkably similar for these two acceptors, with both blends exhibiting efficient, ultrafast charge separation (time constants of 1.6 and 1.4 Ps, respectively). The lower device performance for the PDI acceptor (1.75% compared to 3.5% for the equivalent PC71BM device) is shown to result from slower charge transport, increasing nongeminate recombination losses during charge collection.
Description: Restricted access
URI: http://hdl.handle.net/10572/1988
ISSN: 1948-7185
Appears in Collections:Research Articles (Sridhar Rajaram)

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