Polarized electroluminescence from smectic mesophase
- 25 May 1998
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 72 (21) , 2639-2641
- https://doi.org/10.1063/1.121441
Abstract
Electrically pumped light emission was observed from a smectic mesophase of liquid-crystalline oxadiazole; 2,5-hexyloxybiphenyl–hexyloxyphenyl–oxadiazole (HOBP-OXD), which exhibits high electron transport capability. The light-emitting diode consisted of the HOBP-OXD film, a copper phthalocyanine vacuum deposited film as a hole injection layer, and a tris-(8-hydroxyquinoline) aluminum vacuum deposited film as an electron injection layer. The emission was linearly polarized originating from highly oriented molecular textures in the smectic mesophase with a degree of orientational order of 0.32.Keywords
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