USE OF DIBENZOFURANS AND DIBENZOTHIOPHENES SUBSTITUTED BY NITROGEN-BONDED FIVE-MEMBERED HETEROCYCLIC RINGS IN ORGANIC ELECTRONICS
申请人:LANGER Nicolle
公开号:US20120007063A1
公开(公告)日:2012-01-12
The present invention relates to the use of dibenzofurans and dibenzothiophenes which have at least one nitrogen-bonded five-membered heterocyclic ring as a substituent as host, blocker and/or charge transport material in organic electronics. The present invention further relates to dibenzofurans and dibenzothiophenes which comprise at least one nitrogen-bonded five-membered heterocyclic ring and at least one carbazolyl radical as substituents, to a process for preparation thereof, and to the use of these compounds in organic electronics.
[EN] BICARBAZOLE COMPOUNDS FOR OLEDS<br/>[FR] COMPOSÉS DE BICARBAZOLE POUR DISPOSITIFS ÉLECTROLUMINESCENTS ORGANIQUES (OLED)
申请人:UNIVERSAL DISPLAY CORP
公开号:WO2012023947A1
公开(公告)日:2012-02-23
Novel organic compounds comprising a bicarbazole core are provided. In particular, the compounds has a 3,3'-bicarbazole core substituted at the 9-position with a triazine or pyrimidine. The compounds may be used in organic light emitting devices to provide devices having improved efficiency and improved lifetime.
An organic light-emitting device includes an emission layer and an electron transport layer. The emission layer includes at least one compound represented one of Formula 1, Formula 2 and/or Formula 3. The electron transport layer includes at least one compound represented by Formula 4 and/or Formula 5. An organic light-emitting device including the emission layer and the electron transport layer has high emission efficiency and an improved lifetime.