公开(公告)号：EP2276085B1

公开(公告)日：2013-11-20

申请号：EP09725501.2

申请日：2009-02-27

申请人： NIPPON STEEL & SUMIKIN CHEMICAL CO., LTD.

发明人： FUKUMATSU, Takayuki ,  ICHIHASHI, Ikumi ,  MIYAZAKI, Hiroshi ,  ODA, Atsushi

IPC分类号： H01L51/30 ,  H01L51/50 ,  C07D487/04 ,  C07D493/14 ,  C09K11/06 ,  H01L51/00

CPC分类号： H01L51/5088 ,  C07D487/04 ,  C07D493/14 ,  H01L51/005 ,  H01L51/0053 ,  H01L51/5048 ,  H01L2251/552

摘要： Provided are a hole-injecting material for an organic electroluminescent device (organic EL device) exhibiting high luminous efficiency at a low voltage and having greatly improved driving stability, and an organic EL device using the material. The hole-injecting material for an organic EL device is selected from benzenehexacarboxylic acid anhydrides, benzenehexacarboxylic acid imides, or N-substituted benzenehexacarboxylic acid imides. Further, the organic EL device has at least one light-emitting layer and at least one hole-injecting layer between an anode and a cathode arranged opposite to each other, and includes the above-mentioned hole-injecting material for an organic EL device in the hole-injecting layer. The organic EL device may contain a hole-transporting material having an ionization potential (IP) of 6.0 eV or less in the hole-injecting layer or a layer adjacent to the hole-injecting layer.