Journal
ELECTROCHEMISTRY COMMUNICATIONS
Volume 13, Issue 1, Pages 64-67Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.elecom.2010.11.014
Keywords
Light-emitting electrochemical cell LEC; Iridium(III); Supporting electrolyte; Response time
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Funding
- MOEHRD [KRF-2007-357-C00072]
- Korean Government [2009-0076190, 2010-0001485]
- BK 21 fellowship
- NRF [2010-0005574]
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In this study, light-emitting electrochemical cells (LECs) based on neutral iridium(III) bis(2-phenylquinolato-N, C-2')(3-isoquinaldate) were fabricated. An admixed solid supporting electrolyte tetra-n-butylammonium tetrafluoroborate (TBABF(4)) is employed in the emitting layer, and it facilitates charge injection with decreasing the potential barrier under a biased voltage. The cells generate an electroluminescence (EL) of 300 cd m(-2) at -3.8 V. When the molar ratio of TBABF4 to the complex in the device was 2:1, a fast EL response of 0.8 s was obtained at -4.0 V after the several times of preconditioning. As the quantity of the supporting electrolyte increased, a faster and brighter EL response was obtained. (C) 2010 Elsevier RV. All rights reserved.
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