Extremely Bright Full Color Alternating Current Electroluminescence of Solution-Blended Fluorescent Polymers with Self-Assembled Block Copolymer Micelles

Title
Extremely Bright Full Color Alternating Current Electroluminescence of Solution-Blended Fluorescent Polymers with Self-Assembled Block Copolymer Micelles
Authors
이진균
Issue Date
2013
Publisher
ACS NANO
Series/Report no.
ACS NANO; vol.7 no.12 startpage 10809 endpage 10817
Abstract
Electroluminescent (EL) devices operating at alternating current (AC) electricity have been of great interest due to not only their unique light emitting mechanism of carrier generation and recombination but also their great potential for applications in displays, sensors, and lighting. Despite great success of AC EL devices, most device properties are far from real implementation. In particular, the current state-of-the art brightness of the solutionprocessed AC EL devices is a few hundred candela per square meter (cd m 2) and most of the works have been devoted to red and white emission. In this manuscript, we report extremely bright full color polymer AC EL devices with brightness of approximately 2300, 6000, and 5000 cd m 2 for blue (B), green (G), and red (R) emission, respectively. The high brightness of blue emission was attributed to individually networked multiwalled carbon nanotubes (MWNTs) for the facile carrier injection as well as self-assembled block copolymer micelles for suppression of interchain nonradiative energy quenching. In addition, effective FRET from a solution-blended thin film of B-G and B-G-R fluorescent polymers led to very bright green and red EL under AC voltage, respectively. The solution-processed AC EL device also worked properly with vacuum-free Ag paste on a mechanically flexible polymer substrate. Finally, we successfully demonstrated the long-term operation reliability of our AC EL device for over 15 h.
URI
http://dspace.inha.ac.kr/handle/10505/31889
ISSN
1936-0851
Appears in Collections:
College of Engineering(공과대학) > Polymer Science and Engineering (고분자공학) > Local Access Journal, Report (고분자공학 논문, 보고서)

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse