It is intended to provide a novel material having no absorption or low absorption intensity in the visible region and to provide an electroluminescent device excellent in hole injection characteristic by using the novel material.
A novel organic material wherein two electron abundant aromatic rings inherently having a low ionization potential, such as a thiophene ring, a furan ring, and pyrrol ring, is intervened by a conjugated substituent such as a phenylene ring is provided. The electroluminescent device having an excellent hole injection characteristic is provided by using this novel organic material.
本发明旨在提供一种在可见光区域无吸收或吸收强度低的新型材料,并利用该新型材料提供一种空穴注入特性优异的电致发光器件。
本发明提供了一种新型有机材料,在这种材料中,
噻吩环、
呋喃环和
吡咯环等固有电离电位较低的两个电子丰富的芳香环被苯环等共轭取代基介入。通过使用这种新型有机材料,可提供具有优异空穴注入特性的电致发光器件。