发明名称 |
Method to make organic electroluminescent element material |
摘要 |
In the present invention, provided is an organic electroluminescent element material having a high externally taking-out quantum efficiency, which is suitable for manufacturing an element exhibiting long light emission lifetime, and also provided is an organic electroluminescent element possessing the material, a method of manufacturing the organic electroluminescent element, and a display as well as an illuminating device fitted with the organic electroluminescent element. |
申请公布号 |
US9257680(B2) |
申请公布日期 |
2016.02.09 |
申请号 |
US201414268611 |
申请日期 |
2014.05.02 |
申请人 |
KONICA MINOLTA HOLDINGS, INC. |
发明人 |
Tanaka Tatsuo;Kita Hiroshi;Katakura Rie;Taka Hideo |
分类号 |
H01L51/56;C09K11/06;H01L51/00;H01L27/32;H01L51/50 |
主分类号 |
H01L51/56 |
代理机构 |
Lucas & Mercanti, LLP |
代理人 |
Lucas & Mercanti, LLP |
主权项 |
1. A method of manufacturing an organic electroluminescent element comprising a substrate, a hole transport layer containing a polymer, and a light emission layer containing a phosphorescence dopant, the method comprising the steps of:
purifying a monomer with silica gel chromatography one or two times, followed by recrystallization two or three times to make a purified monomer having an impurity content of 1000 ppm or less; synthesizing the polymer from at least the purified monomer having the impurity content of 1000 ppm or less via a halogen coupling reaction; recovering the polymer; forming the hole transport layer containing the polymer on the substrate by a wet coating process followed by a heating process; and forming the light emission layer containing the phosphorescence dopant on the hole transport layer, wherein the polymer comprises a partial structure represented by the following formula
—Ar1-N(Ar3)-Ar2- wherein each of Ar1 and Ar2 independently represents an arylene group or a heteroarylene group, and Ar3 represents an aromatic hydrocarbon group or an aromatic heterocyclic group. |
地址 |
Tokyo JP |