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Doping front propagation in light-emitting electrochemical cells
Linköping University, Department of Physics, Chemistry and Biology, Surface Physics and Chemistry. Linköping University, The Institute of Technology.ORCID iD: 0000-0002-2773-5096
Umeå University.
Linköping University, Department of Science and Technology. Linköping University, The Institute of Technology.ORCID iD: 0000-0001-5154-0291
Umeå University.
2006 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 74, no 155210Article in journal (Refereed) Published
Abstract [en]

Observations of the expansion of the p- and n-doped regions in planar (lateral) polymer light-emitting electrochemical cells with large (mm-sized) interelectrode gaps driven with 5  to  50  V have inspired a model describing the doping front propagation. We find that the propagation is limited by the movement of ions in the electronically insulating region between the p- and n-doped regions. Two consequences of an ion-limited front propagation are that the doping fronts accelerate as they approach each other, and that fingerlike protrusions are formed, particularly at larger drive voltages.

Place, publisher, year, edition, pages
2006. Vol. 74, no 155210
Keyword [en]
light emitting devices, photoelectrochemical cells, doping, polymers
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:liu:diva-17853DOI: 10.1103/PhysRevB.74.155210OAI: oai:DiVA.org:liu-17853DiVA: diva2:212617
Note
Original Publication: Nathaniel D. Robinson, Joon-Ho Shin, Magnus Berggren and Ludvig Edman, Doping front propagation in light-emitting electrochemical cells, 2006, Physical Review B. Condensed Matter and Materials Physics, (74), 155210. http://dx.doi.org/10.1103/PhysRevB.74.155210 Copyright: American Physical Society http://www.aps.org/ Available from: 2009-04-22 Created: 2009-04-22 Last updated: 2017-12-13Bibliographically approved

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Robinson, Nathaniel D. Berggren, Magnus

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