Abstract: The present invention relates to organic electroluminescent compounds represented by Chemical Formula (1), and electroluminescent devices comprising the same as host material. L1L1M??Chemical Formula 1 The electroluminescent compounds according to the invention, when used as electroluminescent host material in an OLED, provide lowered operation voltage and significantly improved power efficiency as compared to conventional host material.

Abstract: The present invention relates to novel organic electroluminescent compounds, organic electroluminescent devices and organic solar cells comprising the same. Specifically, the organic electroluminescent compounds according to the invention are represented by Chemical Formula (1): wherein, R1 and R2 independently represent hydrogen, deuterium, linear or branched (C1-C20)alkyl, (C2-C20)alkenyl, (C2-C20)alkynyl, (C3-C15)cycloalkyl, tri(C1-C20)alkylsilyl, di(C1-C20)alkyl(C6-C20)arylsilyl, tri(C6-C20)arylsilyl, adamantyl, (C7-C15)bicycloalkyl or (C4-C20)heteroaryl, and the alkyl, alkenyl, alkynyl, cycloalkyl, trialkylsilyl, dialkylarylsilyl, triarylsilyl, adamantyl, bicycloalkyl or heteroaryl of R1 and R2 may be further substituted by one or more substituent(s) selected from deuterium, linear or branched (C1-C20)alkyl, (C1-C20)alkenyl, (C1-C20)alkynyl, halogen, phenyl, fluorenyl, naphthyl and anthryl.

Abstract: The present invention relates to novel organic electroluminescent compounds exhibiting high luminous efficiency, and organic electroluminescent devices comprising the same.

Abstract: The present invention relates to organic electroluminescent compounds represented by Chemical Formula 1 or 2, a process for preparing the same, and an organic light emitting diode (OLED) which comprises, as a luminescent region interposed between an anode and a cathode, at least one compound (s) selected from those represented by Chemical Formula 1 or 2, and at least one compound selected from anthracene derivatives, benz[a]anthracene derivatives and naphthacene derivatives. The electroluminescent compound according to the present invention is a green electroluminescent compound having maximized electroluminescent efficiency and lifetime of device.

Abstract: The present invention relates to electroluminescent compounds represented by Chemical Formula (1) L1L1M(Q)m and electroluminescent devices comprising the same as host material. The electroluminescent compound according to the invention, when used as host material of an OLED, noticeably lowers the operation voltage and enhance the power efficiency.

Abstract: The present invention relates to novel red phosphorescent compounds exhibiting high luminous efficiency, and organic electroluminescent devices comprising the same.

Abstract: The present invention is related to organic electroluminescent compounds, methods of their preparation, and electroluminescent devices adopting them as electroluminescent materials.