Title:
LIGHT-EMITTING ELEMENT
Document Type and Number:
Japanese Patent JP2008177455
Kind Code:
A
Abstract:
To provide a light-emitting element having high light-emission efficiency and capable of driving at a low voltage.
The light-emitting element comprises a positive-hole transport layer, a light-emitting layer, and an electron transport layer between an anode and a cathode. The positive-hole transport layer includes a layer having two kinds or more of compounds containing an electron accepting dopant material. The electron transport layer contains a 1,10 or 1,7 phenanthroline derivative having a specific structure.
Inventors:
IKEDA TAKESHI
TOMINAGA TAKESHI
TOMINAGA TAKESHI
Application Number:
JP2007011069A
Publication Date:
July 31, 2008
Filing Date:
January 22, 2007
Export Citation:
Assignee:
TORAY INDUSTRIES
International Classes:
H01L51/50; C09K11/06
Domestic Patent References:
JP2004281390A | 2004-10-07 | |||
JP2004055258A | 2004-02-19 | |||
JP2006302864A | 2006-11-02 | |||
JP2005093428A | 2005-04-07 |
Foreign References:
WO2006021982A1 | 2006-03-02 |