Cathode buffer layers based on vacuum and solution deposited poly(3,4-ethylenedioxythiophene) for efficient inverted organic solar cells
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Barr - Cathode Buffer Layes for Inverted PVs - APL 2012.pdf
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Author(s)
Barr, Miles C.
Carbonera, Chiara
Po, Riccardo
Gleason, Karen K.
Bulovic, Vladimir
Date Issued
April 2012
Journal
Applied Physics Letters
Publisher
American Institute of Physics (AIP)
Citation
Barr, Miles C., Chiara Carbonera, Riccardo Po, Vladimir Bulović, and Karen K. Gleason. “Cathode buffer layers based on vacuum and solution deposited poly(3,4-ethylenedioxythiophene) for efficient inverted organic solar cells.” Applied Physics Letters 100, no. 18 (2012): 183301. © 2012 American Institute of Physics
Version
Final published version
Abstract
Vacuum and solution processed versions of poly(3,4-ethylenedioxythiophene) (PEDOT) are used as cathode interlayers in inverted organic photovoltaic cells comprising tetraphenyldibenzoperiflanthene as the electron donor and C[subscript 60] as the electron acceptor. Chemical treatment of the as-deposited PEDOT layers with tetrakis(dimethylamino)ethylene or cesium carbonate reduces the work function by up to 0.8 eV. Inserting these PEDOT layers at the indium tin oxide cathode results in improved electron collection and efficiencies of up to 2.3 ± 0.2%, approaching the 3.2 ± 0.3% of the conventional device. This illustrates the potential for efficient polymer cathode materials and inverted device architectures compatible with either solution or vacuum processing.
MIT Department
Massachusetts Institute of Technology. Department of Chemical Engineering
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
Massachusetts Institute of Technology. Microsystems Technology Laboratories
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1063/1.4709481
