Fitzpatrick, Cella Harper & Scinto
Semiconducting hole injection materials for organic light emitting devices
The invention is directed to oxidized charge transport materials having hole transport capability in organic light emitting device (OLEDs). A charge transport compound including more than two triarylamine groups, or including at least one triarylamine group and at least one fluorene group, is partly complexed with an oxidant, such as a Lewis acid, preferably present in an amount between 0.2 and 20 percent by weight. The resulting charge transport materials exhibit good hole transport characteristics and film forming properties.
Canon Kabushiki Kaisha
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Ghassan E. Xiao-Chang Bing R. Alan
Jabbour Li Hsieh Sellinger