发明授权
US07901791B2 Carbazole derivative, and light emitting element and light emitting device using the carbazole derivative 有权
咔唑衍生物,发光元件和使用咔唑衍生物的发光元件

Carbazole derivative, and light emitting element and light emitting device using the carbazole derivative
摘要:
It is an object of the present invention to provide a material which is excellent in a hole injecting property and a hole transporting property, and to provide a light emitting element and a light emitting device using a material which is excellent in a hole injecting property and a hole transporting property. The present invention provides a carbazol derivative represented by a general formula (1). The carbazol derivative according to the present invention is excellent in the hole injecting property. By using the carbazol derivative according to the present invention as a hole injecting material for a hole injecting layer of a light emitting element, a driving voltage can be reduced. In addition, a lower driving voltage, improvement of the luminous efficiency, a longer life time, and higher reliability can be realized by applying the material to a light emitting element or a light emitting device.
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