Thin film organic thermoelectric generator based on tetrathiotetracene

Pudsz, Kaspars and Vembris, A. and Rutkis, M. and Woodward, Simon (2017) Thin film organic thermoelectric generator based on tetrathiotetracene. Advanced Electronic Materials . ISSN 2199-160X

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Abstract

Thin films of p- and n- type organic semiconductors for thermo-electrical (TE) applications are produced by doping of tetrathiotetracene (TTT). To obtain p-type material TTT is doped with iodine during vacuum deposition of thin films or by post-deposition doping using controlled exposure to iodine vapors. Thermal co-deposition in vacuum of TTT and TCNQ is used to prepare n-type thin films. The attained thin films are characterized by measurements of Seebeck coefficient and electrical conductivity. Seebeck coefficient and conductivity could be varied by altering the doping level. P-type TTT:iodide thin films with a power factor of 0.52 μWm-1K-2, electrical conductivity of 130 S m-1 and Seebeck coefficient of 63 μV K-1 and n-type TCNQ:TTT films with power factor of 0.33 μWm-1K-2, electrical conductivity of 57 S m-1 and Seebeck coefficient of -75 μV K-1 are produced. Engineered deposition of both p- and n-type thermoelectric conducting elements on the same substrate is demonstrated. A proof of concept prototype of planar thin film TE generator based on a single p-n couple from the organic materials is built and its power generation characterized.

Item Type: Article
Additional Information: This is the peer reviewed version of the following article: K. Pudzs, A. Vembris, M. Rutkis, S. Woodward, Adv. Electron. Mater. 2017, 1600429, which has been published in final form at http://onlinelibrary.wiley.com/doi/10.1002/aelm.201600429/full This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.
Keywords: Doping; Organic electronics; Thermoelectrics; Thin films
Schools/Departments: University of Nottingham, UK > Faculty of Science > School of Chemistry
Identification Number: 10.1002/aelm.201600429
Depositing User: Bramwell, Roseanna
Date Deposited: 11 Jan 2017 09:09
Last Modified: 18 Oct 2017 07:35
URI: http://eprints.nottingham.ac.uk/id/eprint/39750

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