Title:
LIGHT-EMITTING ELEMENT AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2017/169972
Kind Code:
A1
Abstract:
Provided is a light-emitting element having a positive electrode, a light emitting layer, an electron transport layer, and a negative electrode. The electron transport layer contains: at least one electron transporting material having a lowest unoccupied molecular orbital (LUMO) level of -3.0 eV or higher; and at least one dopant material selected from the group consisting of a heterocyclic compound having a singly occupied molecular orbital (SOMO) level of -2.2 to -1.5 eV and a derivative thereof. The LUMO level of the electron transporting material is lower than the SOMO level of the heterocyclic compound.
Inventors:
IIJIMA TAKAYUKI (JP)
KOBAYASHI SATOSHI (JP)
TANAKA MASANOBU (JP)
AKINO NOBUHIKO (JP)
ZUBERI SHEENA (GB)
KOBAYASHI SATOSHI (JP)
TANAKA MASANOBU (JP)
AKINO NOBUHIKO (JP)
ZUBERI SHEENA (GB)
Application Number:
PCT/JP2017/011173
Publication Date:
October 05, 2017
Filing Date:
March 21, 2017
Export Citation:
Assignee:
SUMITOMO CHEMICAL CO (JP)
CAMBRIDGE DISPLAY TECH LTD (GB)
CAMBRIDGE DISPLAY TECH LTD (GB)
International Classes:
H01L51/50; C08G61/10; H05B33/10; C07D235/18
Foreign References:
| US20140070178A1 | 2014-03-13 | |||
| JP2016041670A | 2016-03-31 | |||
| JP2017033929A | 2017-02-09 |
Other References:
PENG WEI ET AL.: "2-(2-Methoxyphenyl)-1,3- dimethyl-lH-benzoimidazol-3-ium Iodide as a New Air-Stable n-Type Dopant for Vacuum-Processed Organic Semiconductor Thin Films", JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, vol. 134, no. 9, 13 February 2012 (2012-02-13), pages 3999 - 4002, XP055347681
BENJAMIN D. NAAB ET AL.: "Mechanistic Study on the Solution-Phase n-Doping of 1,3-Dimethyl-2- aryl-2,3-dihydro-lH-benzoimidazole Derivatives", JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, vol. 135, no. 40, 6 September 2013 (2013-09-06), pages 15018 - 15025, XP055305799
ZHENGYANG BIN ET AL.: "Air Stable Organic Salt As an n-Type Dopant for Efficient and Stable Organic Light-Emitting Diodes", APPLIED MATERIALS & INTERFACES, vol. 7, 13 March 2015 (2015-03-13), pages 6444 - 6450, XP055428663
See also references of EP 3416205A4
BENJAMIN D. NAAB ET AL.: "Mechanistic Study on the Solution-Phase n-Doping of 1,3-Dimethyl-2- aryl-2,3-dihydro-lH-benzoimidazole Derivatives", JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, vol. 135, no. 40, 6 September 2013 (2013-09-06), pages 15018 - 15025, XP055305799
ZHENGYANG BIN ET AL.: "Air Stable Organic Salt As an n-Type Dopant for Efficient and Stable Organic Light-Emitting Diodes", APPLIED MATERIALS & INTERFACES, vol. 7, 13 March 2015 (2015-03-13), pages 6444 - 6450, XP055428663
See also references of EP 3416205A4
Attorney, Agent or Firm:
HASEGAWA Yoshiki et al. (JP)
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