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Mesoscopic modelling of charge evolution in conducting polymers

Ramos, MMD; Stoneham, AM; (2000) Mesoscopic modelling of charge evolution in conducting polymers. Computational Materials Science , 17 (2-4) 260 - 264. 10.1016/S0927-0256(00)00035-5. Green open access

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Abstract

We address here some of the issues relating to conducting polymer based devices. We examine the effects of polymer disorder on charge injection, transport, trapping and recombination in light-emitting diodes (LEDs) using a mesoscopic model which includes specific realizations of the electroluminescent polymer network. A key point of this model is to consider both the intermolecular and the interdomain charge carrier transport which are strongly influenced by structural polymer disorder. Simulations of bipolar charge evolution (electrons and holes) through a polydiacetylene (PDA) film, which are injected in the polymer layer from the appropriated electrodes, have been used to give some insights to the issue concerning the fraction of polymer molecules contributing to the conduction process as well as to light emission. The effect of charge traps, such as cross-links, on space charge and recombination is also discussed. (C) 2000 Elsevier Science B.V. All rights reserved.

Type: Article
Title: Mesoscopic modelling of charge evolution in conducting polymers
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/S0927-0256(00)00035-5
Publisher version: http://dx.doi.org/10.1016/S0927-0256(00)00035-5
Language: English
Additional information: Text made available to UCL Discovery by kind permission of Elsevier B.V., 2012. Paper published in special issue containing the Proceedings of Symposium C(Progress in Computational Materials Science), presented at the 1999 European Materials Research Society Spring meeting held in Strasbourg (France) from 1 to 4 June 1999
Keywords: Mesoscopic modelling, conducting polymers, electroluminescence, ELECTRONIC PROCESSES, CONJUGATED POLYMERS, ELECTROLUMINESCENCE, EFFICIENCY, TRANSPORT, DEVICES, DIODES
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
URI: https://discovery.ucl.ac.uk/id/eprint/129082
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