Title:
ORGANIC ELECTROLUMINESCENCE ELEMENT
Document Type and Number:
WIPO Patent Application WO/2021/140896
Kind Code:
A1
Abstract:
[Problem] In order to absorb sunlight having a wavelength of 400-410 nm and improve light extraction efficiency without affecting the materials in the interior of an element, the present invention provides an organic electroluminescence element equipped with a capping layer formed from a material that has a high light absorption coefficient at wavelengths of 400-410 nm, a high refractive index, suitable thin film stability, and excellent durability and light resistance and that does not absorb light in any of the red, green, and yellow wavelength ranges. [Solution] An arylamine-based material having a specific structure in the present invention has excellent thin film stability and durability, so a material having high absorbance at wavelengths of 400-410 nm in the absorption spectrum for a concentration of 10-5 mol/L of an amine compound having a specific benzazole ring structure and a high refractive index is selected and used as a material for forming a capping layer in an organic electroluminescence element in order to obtain an organic electroluminescence element exhibiting suitable element characteristics.
Inventors:
HIRAYAMA YUTA (JP)
CHIBA ERIKO (JP)
KASE KOUKI (JP)
YAMAMOTO TAKESHI (JP)
SURUGA KAZUYUKI (JP)
CHIBA ERIKO (JP)
KASE KOUKI (JP)
YAMAMOTO TAKESHI (JP)
SURUGA KAZUYUKI (JP)
Application Number:
PCT/JP2020/047680
Publication Date:
July 15, 2021
Filing Date:
December 21, 2020
Export Citation:
Assignee:
HODOGAYA CHEMICAL CO LTD (JP)
International Classes:
C09K11/06; H01L51/50; H05B33/02; H05B33/04
Domestic Patent References:
| WO2014009310A1 | 2014-01-16 | |||
| WO2013038627A1 | 2013-03-21 |
Foreign References:
| KR102059550B1 | 2019-12-26 | |||
| KR102046983B1 | 2019-11-20 | |||
| CN109824659A | 2019-05-31 | |||
| CN109761967A | 2019-05-17 | |||
| JPH0848656A | 1996-02-20 | |||
| JP3194657B2 | 2001-07-30 |
Other References:
THE JAPAN SOCIETY OF APPLIED PHYSICS, 9TH LECTURE PREPRINTS, 2001, pages 55 - 61
APPL. PHYS. LET., vol. 78, 2001, pages 544
APPL. PHYS. LET., vol. 82, 2003, pages 466
J. ORG. CHEM., vol. 71, 2006, pages 1802
J. ORG. CHEM., vol. 60, 1995, pages 7508
SYNTH. COMMUN., vol. 11, 1981, pages 513
APPL. PHYS. LETT., vol. 98, 2011, pages 083302
See also references of EP 4089156A4
APPL. PHYS. LET., vol. 78, 2001, pages 544
APPL. PHYS. LET., vol. 82, 2003, pages 466
J. ORG. CHEM., vol. 71, 2006, pages 1802
J. ORG. CHEM., vol. 60, 1995, pages 7508
SYNTH. COMMUN., vol. 11, 1981, pages 513
APPL. PHYS. LETT., vol. 98, 2011, pages 083302
See also references of EP 4089156A4
Attorney, Agent or Firm:
SHIMIZU, Yoshihiro (JP)
Download PDF:
Previous Patent: LASER ENGRAVABLE FLEXOGRAPHIC PRINTING ORIGINAL PLATE
Next Patent: METHOD FOR MANUFACTURING SOLAR CELL AND SOLAR CELL
Next Patent: METHOD FOR MANUFACTURING SOLAR CELL AND SOLAR CELL