Enhanced modulation speed of tris(8-hydroxyquinoline)aluminum-based organic light source with low-work-function electrode

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概要

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• We have investigated the effects of barrier height at a metal/organic interface on the modulation speed of organic light-emitting diodes (OLEDs). We found that a low barrier height is important for improving the modulation speed. Also, the insertion of an 8-hydroxyquinolinato lithium (Liq) layer as an electron injection layer (EIL) was observed to increase the modulation speed of OLEDs. As a result, the improved modulation speed was demonstrated using a low-work-function electrode and an EIL. We have ascribed the enhanced modulation speed of the OLEDs to current density-voltage characteristics. A maximum cutoff frequency of 12.1 MHz was achieved for an OLED with a Liq or Ca layer as an EIL and a metal cathode, respectively.

• The Japan Society of Applied Physicsの論文

著者

• Wei Bin

  信州大 繊維

関連論文

• Enhanced modulation speed of tris(8-hydroxyquinoline)aluminum-based organic light source with low-work-function electrode

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