To provide a light emitting element of low driving voltage which comprises an organic compound and an inorganic compound.
A layer comprising a light emitting material is provided between a pair of electrodes. The layer comprising the light emitting material provides a light emitting element having a layer which comprises a carbazole derivative represented by a general formula (1) and an inorganic compound showing electron accepting characteristics to the carbazole derivative represented by the general formula (1). By this constitution, transfer of electrons is performed between the carbazole derivative and the inorganic compound, and carriers are generated intrinsically to reduce the driving voltage of the light emitting element.
COPYRIGHT: (C)2007,JPO&INPIT
Tetsushi Seo
Daisuke Kumaki
Nakajima Harue
Kojima Kumi
JP2003129043A | ||||
JP2003272860A | ||||
JP2006028176A | ||||
JP2006186333A | ||||
JP2006303421A |
A. Balionyte et al.,"Synthesis and properties of polymers containing aromatic amino groups in the main chain and their glass-forming model compounds",European Polymer Journal,2004年,vol. 40,pp. 1645-1650
Di Liu et al.,"Enhancement in brightness and efficiency of organic electroluminescent device using novel N,N-di(9-ethylcarbaz-3-yl)-3-methylaniline as hole injecting and transporting material",Synthetic Metals,2004年,vol. 146,pp. 85-89