Title:
ORGANIC ELECTROLUMINESCENCE ELEMENT
Document Type and Number:
WIPO Patent Application WO/2017/183625
Kind Code:
A1
Abstract:
[Problem] To provide an organic electroluminescence element comprising, in order to improve the element characteristics of the organic EL element, in particular, so as to absorb 400-410 nm wavelength sunlight and not have effects on an inner material of the element, and to widely improve light extraction efficiency, a capping layer constituted from a material having a high absorption coefficient, a high index of refraction, excellent thin film stability, durability and light resistance, and not having absorption in the blue, green and red wavelength regions. [Solution] An organic electroluminescence element having, in this order, at least an anode electrode, a hole transport layer, a light emitting layer, an electron transport layer, a cathode electrode and a capping layer, wherein the extinction coefficient of the capping layer material is 0.3 or greater at wavelengths from 400-410 nm and the organic electroluminescence element includes a material having an absorbency of 0.2 or greater at wavelengths from 400-410 nm in an absorption spectrum having a concentration of 10-5 mol/l.
Inventors:
YOKOYAMA NORIMASA (JP)
HAYASHI SHUICHI (JP)
KABASAWA NAOAKI (JP)
YAMAMOTO TAKESHI (JP)
HAYASHI SHUICHI (JP)
KABASAWA NAOAKI (JP)
YAMAMOTO TAKESHI (JP)
Application Number:
PCT/JP2017/015537
Publication Date:
October 26, 2017
Filing Date:
April 18, 2017
Export Citation:
Assignee:
HODOGAYA CHEMICAL CO LTD (JP)
International Classes:
H05B33/02; H01L51/50; C07B61/00; C07D249/20; C07D263/57; C07D277/66
Domestic Patent References:
| WO2015001726A1 | 2015-01-08 | |||
| WO2013038627A1 | 2013-03-21 | |||
| WO2011043083A1 | 2011-04-14 | |||
| WO2013038627A1 | 2013-03-21 | |||
| WO2015001726A1 | 2015-01-08 |
Foreign References:
| JP2006302878A | 2006-11-02 | |||
| JPH0848656A | 1996-02-20 | |||
| JP3194657B2 | 2001-07-30 | |||
| EP2487991A1 | 2012-08-15 | |||
| EP2757860A1 | 2014-07-23 |
Other References:
THE JAPAN SOCIETY OF APPLIED PHYSICS 9TH LECTURE PREPRINTS, 2001, pages 55 - 61
APPL.PHYS.LETT., vol. 78, 2001, pages 544
APPL.PHYS.LETT., vol. 82, 2003, pages 466
AUST.J.CHEM., vol. 45, 1992, pages 371
J.ORG.CHEM., vol. 60, 1995, pages 7508
SYNTH.COMMUN., vol. 11, 1981, pages 513
APPL.PHYS.LET., vol. 98, 2011, pages 083302
See also references of EP 3432688A4
APPL.PHYS.LETT., vol. 78, 2001, pages 544
APPL.PHYS.LETT., vol. 82, 2003, pages 466
AUST.J.CHEM., vol. 45, 1992, pages 371
J.ORG.CHEM., vol. 60, 1995, pages 7508
SYNTH.COMMUN., vol. 11, 1981, pages 513
APPL.PHYS.LET., vol. 98, 2011, pages 083302
See also references of EP 3432688A4
Attorney, Agent or Firm:
SHIMIZU, Yoshihiro (JP)
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