Electronic states of excess electrons in polyethylene

Cubero, D. and Marcelli, Gianluca and Quirke, N. (2002) Electronic states of excess electrons in polyethylene. IEEE Annual Report Conference on Electrical Insulation and Dielectric Phenomena, . pp. 430-433. ISSN 0084-9162. (doi:https://doi.org/10.1109/CEIDP.2002.1048826) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

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Official URL
http://www.dx.doi.org/10.1109/CEIDP.2002.1048826

Abstract

We compare and contrast preliminary semiclassical results for the electronic states associated with excess electrons in explicit molecular models of crystalline polyethylene and an alkane crystal C<sub>27</sub>H<sub>56</sub>. In addition we consider the low energy states in models of amorphous polyethylene and in voids in amorphous polyethylene. From our results it is clear that alkane crystals are not representative of crystalline polyethylene although they are often so considered. In amorphous polyethylene the ground state is estimated to be at -0.27 &amp;plusmn; 0.1 eV with the electron localised on a nanometre scale in regions of relatively low density. A nanometer void in the amorphous region lowers the ground state to -0.45 &amp;plusmn; 0.1 eV. With respect to realistic models of the crystalline regions of polyethylene such states constitute electron traps of the order of 1.0 eV and are therefore likely to play an important role in determining electron transport in polyethylene.

Item Type: Article
Subjects: Q Science > QC Physics > QC173.45 Condensed Matter
Divisions: Faculties > Sciences > School of Engineering and Digital Arts > Instrumentation, Control and Embedded Systems
Depositing User: Gianluca Marcelli
Date Deposited: 09 Nov 2015 13:25 UTC
Last Modified: 22 Dec 2015 12:29 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/51523 (The current URI for this page, for reference purposes)
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