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Published June 4, 2014 | Supplemental Material
Journal Article Open

Power Factor Enhancement in Solution‐Processed Organic n‐Type Thermoelectrics Through Molecular Design


A new class of high‐performance n‐type organic thermoelectric materials, self‐doping perylene diimide derivatives with modified side chains, is reported. These materials achieve the highest n‐type thermoelectric performance of solution‐processed organic materials reported to date, with power factors as high as 1.4 μW/mK^2. These results demonstrate that molecular design is a promising strategy for enhancing organic thermoelectric performance.

Additional Information

© 2014 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim. Issue Online 02 June 2014; Version of Record online: 14 March 2014; Manuscript revised: 02 February 2014; Manuscript received: 13 December 2013. This work was funded by the AFOSR MURI program under FA9550‐12‐1‐0002. B.R. and M.J.R contributed equally to this work. Portions of this research were carried out at the Molecular Foundry, a Lawrence Berkeley National Laboratory user facility supported by the Office of Science, Office of Basic Energy Sciences, U.S. Department of Energy, under Contract DE‐AC02‐05CH11231. Portions of this work were performed at the MRL Shared Experimental Facilities, which are supported by the MRSEC Program of the NSF under Award No. DMR 1121053; a member of the NSF‐funded Materials Research Facilities Network (www.mrfn.org). GIWAXS studies were performed at the Stanford Synchrotron Radiation Lightsource (beamline 11‐3), a Directorate of SLAC National Accelerator Laboratory and an Office of Science User Facility operated for the U.S. Department of Energy Office of Science by Stanford University. B.R. gratefully acknowledges the Department of Defense, AFOSR, for fellowship support under the National Defense Science and Engineering Graduate Fellowship (DOD‐NDSEG), 32 CFR 168a under contract FA9550‐11‐C‐0028. M.J.R. thanks UC Regents, CSP Technologies, and the Department of Energy Office of Science (DOE‐SCGF) for graduate fellowships.

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