Large dopant dependence of the current limiting properties of intrinsic conducting polymer surge protection devices

Jabarullah, Noor H.; Verrelli, Emanuele; Gee, Alex; Mauldin, Clayton; Navarro, Luis A.; Golden, Josh H.; Kemp, Neil T.

Abstract

New two terminal surge protection devices based on intrinsic conducting polymers are demonstrated to be strongly affected by the dopant molecule type. Thermogravimetric analysis combined with current–voltage studies show a causal link between the dopant molecule, moisture content and the current limiting capability of the devices. Polyaniline thin-films with high moisture content produce devices with current saturation and foldback effects at high applied voltages while low moisture content films exhibit no current rectification and instead demonstrate decreasing resistivity with increasing voltage. Polyaniline doped with sulfuric acid (H2SO4) exhibited the largest moisture content and surge protection devices built with this material produced for the first time negative differential resistance under ambient conditions. A further improvement was made upon this through surface engineering of the interface between the polymer and electrodes using self-assembled monolayers.

Citation

Jabarullah, N. H., Verrelli, E., Gee, A., Mauldin, C., Navarro, L. A., Golden, J. H., & Kemp, N. T. (in press). Large dopant dependence of the current limiting properties of intrinsic conducting polymer surge protection devices. RSC advances, 6(89), 85710-85717. https://doi.org/10.1039/c6ra18549e

• Journal Article Type: Article
• Acceptance Date: Sep 4, 2016
• Online Publication Date: Sep 5, 2016
• Deposit Date: Sep 12, 2016
• Publicly Available Date: Sep 12, 2016
• Journal: RSC advances
• Print ISSN: 2046-2069
• Electronic ISSN: 2046-2069
• Publisher: Royal Society of Chemistry
• Peer Reviewed: Peer Reviewed
• Volume: 6
• Issue: 89
• Pages: 85710-85717
• DOI: https://doi.org/10.1039/c6ra18549e
• Keywords: Dopants
• Public URL: https://hull-repository.worktribe.com/output/442866
• Publisher URL: http://pubs.rsc.org/en/content/articlelanding/2016/ra/c6ra18549e#!divAbstract
• Additional Information: : This document is Similarity Check deposited; : Noor H. Jabarullah (ORCID); : Neil T. Kemp (ORCID); : The Royal Society of Chemistry has an exclusive publication licence for this journal; : Single-blind; : Received 21 July 2016; Accepted 4 September 2016; Accepted Manuscript published 5 September 2016; Version of Record published 8 September 2016