Doping front propagation in light-emitting electrochemical cells
2006 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, Vol. 74, no 155210Article in journal (Refereed) Published
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
light emitting devices, photoelectrochemical cells, doping, polymers
IdentifiersURN: urn:nbn:se:liu:diva-17853DOI: 10.1103/PhysRevB.74.155210OAI: oai:DiVA.org:liu-17853DiVA: diva2:212617
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.
Copyright: American Physical Society