Organic electro-luminescence device

Abstract

An organic electro-luminescence device includes a substrate, a hole injection layer disposed on the substrate, an organic layer disposed on the hole injection layer, a buffer layer disposed on the organic layer, and an electron injection layer forming above the buffer layer. The buffer layer is needed for protecting the organic layer while the electron injection layer is being formed. Within, the organic layer includes a light-emitting layer and an electron transporting layer disposed on the light-emitting layer. The electron transporting layer includes Cesium fluoride.

1 . An organic electro-luminescence device comprises: 
 a substrate;    a hole injection layer disposed on the substrate;    an organic layer, disposed on the hole injection layer, having a light-emitting layer and an electron transporting layer disposed on the light-emitting layer, wherein the electron transporting layer comprises cesium fluoride;    a buffer layer disposed on the organic layer; and    an electron injection layer disposed on the buffer layer.    
   
   
       2 . The organic electro-luminescence device according to  claim 1 , wherein the electron transporting layer comprises a metal chelate compound.  
   
   
       3 . The organic electro-luminescence device according to  claim 2 , wherein the metal chelate compound comprises an aluminum chelate.  
   
   
       4 . The organic electro-luminescence device according to  claim 1 , wherein the electron transporting layer comprises a first electron transporting layer and a second electron transporting layer comprising cesium fluoride.  
   
   
       5 . The organic electro-luminescence device according to  claim 4 , wherein the second electron transporting layer comprises a metal chelate compound.  
   
   
       6 . The organic electro-luminescence device according to  claim 5 , wherein the metal chelate compound comprises an aluminum chelate.  
   
   
       7 . The organic electro-luminescence device according to  claim 4 , wherein the first electron transporting layer comprises a metal chelate compound.  
   
   
       8 . The organic electro-luminescence device according to  claim 7 , wherein the metal chelate compound comprises an aluminum chelate.  
   
   
       9 . The organic electro-luminescence device according to  claim 1 , wherein the buffer layer comprises a phthalocyanine-based organic compound.  
   
   
       10 . The organic electro-luminescence device according to  claim 1 , wherein the buffer layer comprises copper phthalocyanine (CuPc).  
   
   
       11 . The organic electro-luminescence device according to  claim 1 , wherein the organic layer further has a hole transporting layer disposed under the light-emitting layer.