Title:
発光素子、及び発光装置
Document Type and Number:
Japanese Patent JP4435735
Kind Code:
B2
Abstract:
Organic materials doped with alkali metal have been conventionally used for electron transport layers or electron injection layers which constitute light-emitting films in organic EL light-emitting elements which are used in display devices or illuminating devices. Such conventional organic materials involve problems such that a strict process control is required since the alkali metal is highly reactive and thus, likely to be formed into a hydroxide, such that the resulting light-emitting element or light-emitting device needs complete sealing, and such that life of the light-emitting element cannot be sufficiently long. The present invention uses an alkali metal-including fullerene or an organic material doped with an alkali metal-including fullerene for electron transport layers or electron injection layers which constitute light-emitting films in organic EL light-emitting elements. The alkali metal-including fullerene or the organic material doped with an alkali metal-including fullerene is not very reactive with moisture or other impurities in the atmosphere and thus, the process control thereof is easy. Furthermore, even with a simple sealing structure, the resulting light-emitting element can be sufficiently long life.
Inventors:
Yasuhiko Kasama
Table Kenji
Table Kenji
Application Number:
JP2005511564A
Publication Date:
March 24, 2010
Filing Date:
July 12, 2004
Export Citation:
Assignee:
Ideal Star Co., Ltd.
International Classes:
H01L51/50; C09K11/06; G09F9/30; H01L27/32; H01L51/00; H05B33/22
Domestic Patent References:
| JP200359657A | ||||
| JP9309711A | ||||
| JP693258A | ||||
| JP8310805A | ||||
| JP2002313582A | ||||
| JP2002280176A |
Attorney, Agent or Firm:
Hisao Fukumori