Process of producing organic electroluminescence element composition, organic electroluminescence element composition, process of producing organic electroluminescence element, organic electroluminescence element, organic EL display device and organic EL lighting
View Patent ↗To provide a process of producing an organic electroluminescence element having a high current efficiency and a long drive life by a wet film formation process. The present invention relates to a process of producing an organic electroluminescence element composition, comprising a filtration step of filtering a solution containing an organic electroluminescence element material and a solvent, wherein the composition is obtained after a time-elapsing step wherein 8 hours or more elapses after the filtration step, and the composition is used for a wet film formation of an organic layer in an organic electroluminescence element.
1. A process of producing an organic electroluminescence element composition, comprising a filtration step of filtering a solution containing an organic electroluminescence element material and a solvent, wherein the composition is obtained after a time-elapsing step wherein 8 hours or more elapses after the filtration step, and the composition is used for a wet film formation of an organic layer in an organic electroluminescence element.
2. The process of producing an organic electroluminescence element composition as claimed in claim 1 , wherein the molecular weight of the organic electroluminescence element material is from 100 to 10,000.
3. The process of producing an organic electroluminescence element composition as claimed in claim 1 , wherein the organic electroluminescence element material is a luminescent layer material.
4. An organic electroluminescence element composition, produced by the process of producing an organic electroluminescence element composition claimed in claim 1 .
5. A process of producing an organic electroluminescence element comprising an organic layer between an anode and a cathode, wherein the organic layer is formed by a wet film formation of the organic electroluminescence element composition claimed in claim 4 .
6. A process of producing an organic electroluminescence element comprising an organic layer between an anode and a cathode, wherein the organic layer is formed by a wet film formation of a composition that is obtained after a solution containing an organic electroluminescence element material and a solvent is filtered and then 8 hours or more elapses.
7. An organic electroluminescence element obtained by the process of producing an organic electroluminescence element claimed in claim 6 .
8. An organic EL display device comprising the organic electroluminescence element claimed in claim 7 .
9. An organic EL lighting comprising the organic electroluminescence element claimed in claim 7 .
10. An organic electroluminescence element composition, produced by the process of producing an organic electroluminescence element composition claimed in claim 2 .
11. An organic electroluminescence element obtained by the process of producing an organic electroluminescence element claimed in claim 5 .