Title:
LIGHT EMITTING ELEMENT
Document Type and Number:
WIPO Patent Application WO/2012/008281
Kind Code:
A1
Abstract:
Provided is an organic thin film light emitting element which has achieved all of improved luminous efficiency, improved driving voltage and improved durability life. Specifically provided is a light emitting element which comprises a hole transport layer and an electron transport layer between a positive electrode and a negative electrode and emits light by means of electrical energy. The light emitting element is characterized in that: the hole transport layer of the light emitting element contains a compound represented by general formula (1); the electron transport layer contains a donor compound; and the donor compound is an alkali metal, an inorganic salt containing an alkali metal, a complex of an alkali metal and an organic substance, an alkaline earth metal, an inorganic salt containing an alkaline earth metal, or a complex of an alkaline earth metal and an organic substance. (In the formula, R1-R20 each represents one group selected from the group consisting of hydrogen, deuterium, an alkyl group, a cycloalkyl group, an amino group, an aryl group, a heterocyclic group, a heteroaryl group, an alkenyl group, a cycloalkenyl group, an alkynyl group, an alkoxy group, an alkylthio group, an arylether group, an arylthioether group, a halogen, a cyano group, a -P(=O)R24R25 group and a silyl group; R24 and R25 each represents an aryl group or a heteroaryl group; and these substituents may be further substituted, or adjacent two substituents may combine together to form a ring. Meanwhile, R21-R23 may be the same or different and each represents one group selected from the group consisting of an alkyl group, a cycloalkyl group, an aryl group and a heteroaryl group; and these substituents may be further substituted.)
Inventors:
TANAKA DAISAKU
MATSUKI SHINICHI
TOMINAGA TSUYOSHI
MATSUKI SHINICHI
TOMINAGA TSUYOSHI
Application Number:
PCT/JP2011/064512
Publication Date:
January 19, 2012
Filing Date:
June 24, 2011
Export Citation:
Assignee:
TORAY INDUSTRIES (JP)
TANAKA DAISAKU
MATSUKI SHINICHI
TOMINAGA TSUYOSHI
TANAKA DAISAKU
MATSUKI SHINICHI
TOMINAGA TSUYOSHI
International Classes:
H01L51/50; C07D209/86
Domestic Patent References:
| WO2006085615A1 | 2006-08-17 | |||
| WO2010001817A1 | 2010-01-07 | |||
| WO2011048822A1 | 2011-04-28 | |||
| WO2011048821A1 | 2011-04-28 |
Foreign References:
| JPH083547A | 1996-01-09 | |||
| JP2007208217A | 2007-08-16 | |||
| JPH05222361A | 1993-08-31 | |||
| JP2007194241A | 2007-08-02 | |||
| JP2008266309A | 2008-11-06 | |||
| JPH083547A | 1996-01-09 | |||
| JPH09249876A | 1997-09-22 | |||
| JPH11144876A | 1999-05-28 | |||
| JP2008294161A | 2008-12-04 | |||
| JP2003133075A | 2003-05-09 | |||
| KR20090028943A | 2009-03-20 | |||
| JP2000348864A | 2000-12-15 | |||
| JP2004277377A | 2004-10-07 | |||
| JP2003347060A | 2003-12-05 | |||
| JP2002352961A | 2002-12-06 | |||
| JP2004002297A | 2004-01-08 |
Other References:
SOO-KANG KIM ET AL.: "Synthesis and Hole- Transporting Properties of Phenyl-Carbazyl Derivatives", MOLECULAR CRYSTALS AND LIQUID CRYSTALS, vol. 491, no. 1, 2008, pages 133 - 144, XP008169593
APPLIED PHYSICS LETTERS (USA, vol. 51, no. 12, 1987, pages 913
APPLIED PHYSICS LETTERS (USA, vol. 51, no. 12, 1987, pages 913
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