Organic electroluminescence device emitting white light

Abstract

An organic electroluminescence device emitting white light which emits white light and exhibits properties sufficient for practical applications, i.e., a high efficiency of light emission and a long life, is provided. The organic electroluminescence device emitting white light comprises a pair of electrodes and a layer of a light emitting medium disposed between the pair of electrodes, wherein the layer of a light emitting medium comprises a light emitting material emitting blue light and a fluorescent compound having at least one structure selected from a fluoranthene skeleton structure, a pentacene skeleton structure and a perylene skeleton structure.

1 - 29 . (canceled) 
   
   
       30 . An organic electroluminescence device comprising a pair of electrodes and a layer of a light emitting medium disposed between the pair of electrodes,
 wherein the layer of a light emitting medium comprises a material emitting blue light and a fluorescent compound having a perylene skeleton structure represented by the following general formula [12] or [13]:   
     
       
         
         
             
             
         
       
       wherein X 1  to X 16  in formula [12] and X 1  to X 14  in formula [13] each independently represent: a hydrogen atom; a linear, branched or cyclic alkyl group having 1-20 carbon atoms; a linear, branched or cyclic alkoxy group having 1-20 carbon atoms; a substituted or unsubstituted aryl group having 6-30 carbon atoms; a substituted or unsubstituted aryloxy group having 6-30 carbon atoms; a substituted or unsubstituted arylamino group having 6-30 carbon atoms; a substituted or unsubstituted alkylamino group having 1-30 carbon atoms; a substituted or unsubstituted arylalkylamino group having 7-30 carbon atoms; or a substituted or unsubstituted alkenyl group having 8-30 carbon atoms, adjacent substituents and adjacent groups represented by X 1  to X 16  in formula [12] and X 1  to X 14  in formula [13] may be bonded to each other to form a cyclic structure, and when the adjacent substituents are aromatic groups, the substituents may be the same group, and wherein the fluorescent compound has a peak wavelength of fluorescence at 540 nm to 650 nm. 
     
   
   
       31 . The organic electroluminescence device according to  claim 30 , wherein the layer of a light emitting medium comprises a light emitting layer A comprising the material emitting blue light and the fluorescent compound. 
   
   
       32 . The organic electroluminescence device according to  claim 30 , wherein the layer of a light emitting medium comprises a light emitting layer emitting blue light and a light emitting layer A which comprises the material emitting blue light and the fluorescent compound. 
   
   
       33 . The organic electroluminescence device according to  claim 30 , wherein the layer of a light emitting medium comprises a light emitting layer B comprising the material emitting blue light and a layer comprising the fluorescent compound. 
   
   
       34 . The organic electroluminescence device according to  claim 31 , wherein the light emitting layer A further comprises a fluorescent dopant emitting blue light. 
   
   
       35 . The organic electroluminescence device according to  claim 32 , wherein the light emitting layer A further comprises a fluorescent dopant emitting blue light. 
   
   
       36 . The organic electroluminescence device according to  claim 33 , wherein the light emitting layer B further comprises a fluorescent dopant emitting blue light. 
   
   
       37 . The organic electroluminescence device according to  claim 32 , wherein the light emitting layer emitting blue light further comprises a fluorescent dopant emitting blue light. 
   
   
       38 . The organic electroluminescence device according to  claim 30 , wherein the layer of a light emitting medium comprises a hole transporting material or a hole injecting material. 
   
   
       39 . The organic electroluminescence device according to  claim 30 , wherein the layer of a light emitting medium comprises a hole transporting layer or a hole injecting layer. 
   
   
       40 . The organic electroluminescence device according to  claim 30 , wherein the layer of a light emitting medium comprises an electron transporting material or an electron injecting material. 
   
   
       41 . The organic electroluminescence device according to  claim 30 , wherein the layer of a light emitting medium comprises an electron transporting layer or an electron injecting layer. 
   
   
       42 . The organic electroluminescence device according to  claim 30 , wherein the layer of a light emitting medium contacts an anode and comprises an oxidizing agent. 
   
   
       43 . The organic electroluminescence device according to  claim 30 , wherein the layer of a light emitting medium contacts a cathode and comprises a reducing agent. 
   
   
       44 . The organic electroluminescence device according to  claim 30 , wherein a layer of an inorganic compound is disposed between at least one of the electrodes and the layer of a light emitting medium. 
   
   
       45 . The organic electroluminescence device according to  claim 30 , wherein the light emitting material emitting blue light is a styryl derivative, an anthracene derivative or an aromatic amine. 
   
   
       46 . The organic electroluminescence device according to  claim 45 , wherein the styryl derivative is at least one compound selected from distyryl derivatives, tristyryl derivatives, tetrastyryl derivatives and styrylamine derivatives. 
   
   
       47 . The organic electroluminescence device according to  claim 45 , wherein the anthracene derivative is a compound having a phenylanthracene skeleton structure. 
   
   
       48 . The organic electroluminescence device according to  claim 45 , wherein the aromatic amine is a compound having 2 to 4 nitrogen atoms which are substituted with an aromatic group. 
   
   
       49 . The organic electroluminescence device according to  claim 45 , wherein the aromatic amine is a compound having 2 to 4 nitrogen atoms which are substituted with an aromatic group and having at least one alkenyl group. 
   
   
       50 . The organic electroluminescence device according to  claim 34 , wherein the fluorescent dopant emitting blue light is at least one compound selected from styrylamines, styryl compounds substituted with an amine and compounds having a condensed aromatic ring. 
   
   
       51 . The organic electroluminescence device according to  claim 35 , wherein the fluorescent dopant emitting blue light is at least one compound selected from styrylamines, styryl compounds substituted with an amine and compounds having a condensed aromatic ring. 
   
   
       52 . The organic electroluminescence device according to  claim 36 , wherein the fluorescent dopant emitting blue light is at least one compound selected from styrylamines, styryl compounds substituted with an amine and compounds having a condensed aromatic ring. 
   
   
       53 . The organic electroluminescence device according to  claim 37 , wherein the fluorescent dopant emitting blue light is at least one compound selected from styrylamines, styryl compounds substituted with an amine and compounds having a condensed aromatic ring. 
   
   
       54 . The organic electroluminescence device according to  claim 30 , wherein the fluorescent compound has an electron-donating group. 
   
   
       55 . The organic electroluminescence device according to  claim 30 , which emits white light.