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Fixed p-i-n junction polymer light-emitting electrochemical cells based on charged self-assembled monolayers
University of California, Santa Cruz. (Physics Department)ORCID iD: 0000-0002-2799-3490
University of California, Santa Cruz. (Physics Department)
University of California, Santa Cruz. (Physics Department)
2007 (English)In: Applied Physics Letters, ISSN 0003-6951, E-ISSN 1077-3118, Vol. 90, 103508- p.Article in journal (Refereed) Published
Abstract [en]

The authors report on enhanced efficiency of polymer light-emitting electrochemical cells (LECs) by means of forming a n-doping self-assembled monolayer (SAM) at the cathode-polymer interface. The addition of the SAM, a silane-based salt with structural similarity to the commonly used LEC n-dopant tetra-n-butylammonium, caused a twofold increase in quantum efficiency. Photovoltaic analysis indicates that the SAM increases both the open-circuit voltage and short-circuit current. Current versus voltage data are presented which indicate that the SAM does not simply introduce an interfacial dipole layer, but rather provides a fixed doping region, and thus a more stable p-i-n structure.

Place, publisher, year, edition, pages
2007. Vol. 90, 103508- p.
National Category
Engineering and Technology
URN: urn:nbn:se:liu:diva-77350DOI: 10.1063/1.2711769OAI: diva2:526377
Available from: 2012-06-07 Created: 2012-05-11 Last updated: 2013-09-12Bibliographically approved

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