Method for producing organic electroluminescent device, organic electroluminescent device, and electronic apparatus

Abstract

To provide a method for producing an organic electroluminescent device having luminescent characteristics of high efficiency and prolonged lifetime and in which the occurrence of defects is suppressed, the organic electroluminescent device, and an electronic apparatus. A method for producing an organic electroluminescent device including a first electrode, a second electrode, and a functional layer disposed between the first electrode and the second electrode, the functional layer including at least a luminescent layer, the method includes the steps of mixing a solvent and a functional material to produce a functional solution; and applying the functional solution to form the functional layer by a wet film formation process, wherein, before the functional solution is produced, the solvent is subjected to dehydration and deoxygenation in order to remove water and oxygen in the solvent.

1 . A method for producing an organic electroluminescent device comprising a first electrode, a second electrode, and a functional layer disposed between the first electrode and the second electrode, the functional layer comprising at least a luminescent layer, the method comprising the steps of: 
 mixing a solvent and a functional material to produce a functional solution; and    applying the functional solution to form the functional layer by a wet film formation process, wherein, before the functional solution is produced, the solvent is subjected to dehydration and deoxygenation in order to remove water and oxygen in the solvent.    
   
   
       2 . The method for producing an organic electroluminescent device according to  claim 1 , wherein the functional layer is formed in an inert gas atmosphere.  
   
   
       3 . The method for producing an organic electroluminescent device according to  claim 1 , wherein each of the water content and the oxygen content in the solvent is 20 ppm or less after the dehydration and the deoxygenation.  
   
   
       4 . The method for producing an organic electroluminescent device according to  claim 1 , wherein the solvent is a mixed solvent containing a plurality of types of solvents, the method further comprising the steps of: 
 dehydrating and deoxygenating each of the plurality of types of solvents; and    mixing the resulting solvents together.    
   
   
       5 . The method for producing an organic electroluminescent device according to  claim 1 , wherein the wet film formation process is a droplet discharging process.  
   
   
       6 . An organic electroluminescent device comprising the functional layer formed by the method according to  claim 1 .  
   
   
       7 . An electronic apparatus comprising the organic electroluminescent device according to  claim 6.