公开(公告)号：EP4266393A1

公开(公告)日：2023-10-25

申请号：EP21906713.9

申请日：2021-12-17

申请人： Nippon Shokubai Co., Ltd. ,  Nippon Hoso Kyokai

发明人： KUWADA, Kenji ,  MORII, Katsuyuki ,  HASEGAWA, Munehiro ,  SASAKI, Tsubasa ,  FUKAGAWA, Hirohiko ,  OONO, Taku ,  SHIMIZU, Takahisa

IPC分类号： H01L51/50 ,  G09F9/00 ,  G09F9/30 ,  H01L27/32 ,  H05B33/10 ,  H05B33/26

摘要： The present invention aims to provide a less expensive flexible organic electroluminescence device having higher characteristics. In particular, the present invention aims to solve at least one of an issue of low-voltage driving and improvement of operational lifetime or an issue of providing an organic electroluminescence device that can exhibit good luminescence and has excellent stability in the atmosphere. The present invention relates to the organic electroluminescence device at least including: a pair of electrodes; and an organic layer between the electrodes, the organic electroluminescence device comprising a metal electron injection layer on the cathode and an organic electron injection layer on the metal electron injection layer, the metal electron injection layer containing a metal species and the organic electron injection layer containing an organic material, being capable of coordination with the metal species.

公开(公告)号：EP4026881A1

公开(公告)日：2022-07-13

申请号：EP20860625.1

申请日：2020-09-04

申请人： Nippon Hoso Kyokai ,  Nippon Shokubai Co., Ltd.

发明人： FUKAGAWA, Hirohiko ,  SHIMIZU, Takahisa ,  SASAKI, Tsubasa ,  OONO, Taku ,  HASEGAWA, Munehiro ,  MORII, Katsuyuki ,  FUKUDOME, Hiroki

IPC分类号： C09K11/06 ,  H01L51/46 ,  G09F9/30 ,  H01L27/32 ,  H01L51/05 ,  H01L51/30 ,  H01L29/786 ,  H05B33/10 ,  H01L51/50

摘要： The present invention aims to provide an organic thin film that imparts an excellent electron injection property and an excellent electron transport property when it is used as an electron injection layer of an organic EL device. The present invention relates to an organic thin film, which is a single film containing a first material which is a hexahydropyrimidopyrimidine compound having a structure of the following formula (1) and a second material which transports electrons, or a laminate film including a film containing the first material and a film containing the second material,

wherein R 1 is an optionally substituted aromatic hydrocarbon group, an optionally substituted aromatic heterocyclic group, an optionally substituted arylalkylene group, an optionally substituted divalent to tetravalent acyclic or cyclic hydrocarbon group, a group of a combination of two or more of these groups, or a group of a combination of one or more of these groups and a nitrogen atom; and n is an integer of 1 to 4.