Document Detail

Flexible and Metal-Free Light-Emitting Electrochemical Cells Based on Graphene and PEDOT-PSS as the Electrode Materials.
MedLine Citation:
PMID:  21189028     Owner:  NLM     Status:  In-Data-Review    
We report flexible and metal-free light-emitting electrochemical cells (LECs) using exclusively solution-processed organic materials and illustrate interesting design opportunities offered by such conformable devices with transparent electrodes. Flexible LEC devices based on chemically derived graphene (CDG) as the cathode and poly(3,4-ethylenedioxythiophene) mixed with poly(styrenesulfonate) as the anode exhibit a low turn-on voltage for yellow light emission (V = 2.8 V) and a good efficiency 2.4 (4.0) cd/A at a brightness of 100 (50) cd/m(2). We also find that CDG is electrochemically inert over a wide potential range (+1.2 to -2.8 V vs ferrocene/ferrocenium) and exploit this property to demonstrate planar LEC devices with CDG as both the anode and the cathode.
Piotr Matyba; Hisato Yamaguchi; Manish Chhowalla; Nathaniel D Robinson; Ludvig Edman
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Publication Detail:
Type:  Journal Article     Date:  2010-12-28
Journal Detail:
Title:  ACS nano     Volume:  5     ISSN:  1936-086X     ISO Abbreviation:  ACS Nano     Publication Date:  2011 Jan 
Date Detail:
Created Date:  2011-01-25     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101313589     Medline TA:  ACS Nano     Country:  United States    
Other Details:
Languages:  eng     Pagination:  574-80     Citation Subset:  IM    
The Organic Photonics and Electronics Group, Department of Physics, Umeå University, SE-901 87 Umeå, Sweden.
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