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Wong, S.S.; Shao, M.; Garrett, M.P.; Xu, X.; Ivanov, I.N.; Hu, B.
Brookhaven National Laboratory (United States). Funding organisation: DOE - Office Of Science (United States)2011
Brookhaven National Laboratory (United States). Funding organisation: DOE - Office Of Science (United States)2011
AbstractAbstract
[en] Effects of single walled carbon nanotubes (SWNTs) on the electroluminescent performance of organic light-emitting diodes (OLEDs) have been investigated by mixing them in a hole-conducting layer and in a light-emitting layer in OLEDs. We found that SWNTs play different roles when used as polymer:SWNT composites in OLEDs. When used in a hole-conducting layer, SWNTs facilitate the charge transport in the transport layer and on the other hand they also act as the exciton quenching centers at the transporting/emitting interface provided their concentration is high enough. When used in a light-emitting layer, SWNTs act as an n-type dopant to increase electron transport in p-type electroluminescent film and subsequently improve the balancing degree of bipolar injection, leading to an enhancement in the electroluminescence efficiency.
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Source
BNL--95249-2011-JA; KC0202020; AC02-98CH10886
Record Type
Journal Article
Journal
Organic Electronics; ISSN 1566-1199; ; v. 12(6); p. 1098-1102
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