Journal
APPLIED PHYSICS LETTERS
Volume 94, Issue 24, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3153511
Keywords
charge injection; conducting polymers; electrochemical devices; ionic conductivity; organic light emitting diodes; spin coating
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Funding
- Korea Ministry of Knowledge Economy (MKE) [2008-N-PV08-P-01]
- Program for Integrated Molecular System (PIMS)
- Ministry of Education of Korea through Brain Korea 21 (BK21) program
- Korea government (MEST) [M10500000077-06J0000-07710, R15-2008006-02001-0]
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Polymer light-emitting diodes (PLEDs) and light-emitting electrochemical cells (LECs) were fabricated using a water-soluble conjugated polymer with ion-conducting side chains. The water-soluble polymer was spin-coated on the emitting layer of a PLED and was used as an electron-injecting layer. The PLED showed enhanced performance with LEC behavior due to both the mobile ions and ion-conducting side groups of the polymer. A single-component and single-layer device was also fabricated, which showed typical LEC behavior with 1.13% maximum external quantum efficiency after complete ion migration.
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