Organic electroluminescence device, lighting device, and display having a reactive organic compound

1. An organic electroluminescence device comprising on a support substrate an anode and a cathode, and one or more organic layers between the anode and the cathode and at least one organic layer containing a reactive organic compound, wherein when an electric current is applied to device at a current density of from 0.01 mA/cm 2 to 10000 mA/cm 2 , a concentration of the reactive organic compound is reduced from a concentration before application of the electric current and when an emission luminance is reduced to 90% of an initial luminance by application of the electric current, a concentration (M90) of the reactive organic compound is within a range of 0.1 mol/cm 3 to 10 mol/m 3 .

2. The organic electroluminescence device as claimed in 1 , wherein the current density is from 0.01 mA/cm 2 to 1000 mA/cm 2 .

3. The organic electroluminescence device as claimed in claim 1 , wherein the reactive organic compound is a polymerizable monomer.

4. The organic electroluminescence device as claimed in claim 1 , wherein the reactive substituents each have any one of partial structures represented by the following formulas:

5. The organic electroluminescence device as claimed in claim 1 , wherein when an emission luminance is reduced to 90% of an initial emission luminance by application of the electric current, the concentration of the reactive organic compound in the organic layer is reduced from a concentration before the application of an electric current.

6. The organic electroluminescence device as claimed in claim 1 , wherein a ratio of a concentration (M70) of the reactive organic compound when an emission luminance is reduced to 70% of an initial luminance to a concentration (M90) of the reactive organic compound when a luminance is lowered to 90% of an initial luminance, ΔM (M70/M90) meets the following requirement (1):

0.1≦ΔM<1.0.  requirement (1)

7. The organic electroluminescence device as claimed in claim 1 , wherein at least one of the organic layers satisfies the following expression (2):

1.04 <[Tg (50%)/ Tg (initial)]<1.20  expression (2)

wherein Tg(50%) is a glass transition point when an emission luminance is reduced to 50% of an initial emission luminance and Tg(initial) is a glass transition point before initiating the application of an electric current.

8. The organic electroluminescence device as claimed in claim 7 , wherein the Tg(90%) and the Tg(50%) meet the following expression (3):

1.00 <[Tg (50%)/ Tg (90%)]<1.05.  expression (3)

9. A lighting device provided with an organic electroluminescence device as claimed in claim 1 .

10. A display device provided with an organic electroluminescence device as claimed in claim 1 .

11. An organic electroluminescence device comprising on a support substrate an anode and a cathode, and one or more organic layers between the anode and the cathode and at least one organic layer containing a reactive organic compound, wherein when an electric current is applied to device at a current density of from 0.01 mA/cm 2 to 10000 mA/cm 2 , a concentration of the reactive organic compound is reduced from a concentration before application of the electric current and at least one of the organic layers satisfies the following expression (1):

1.03 ≦[Tg (90%)/ Tg (initial)]≦1.20  expression (1)

wherein Tg(90%) is a glass transition point when an emission luminance is reduced to 90% of an initial emission luminance and Tg(initial) is a glass transition point before initiating the application of an electric current.

12. The organic electroluminescence device as claimed in 11 , wherein the current density is from 0.01 mA/cm 2 to 1000 mA/cm 2 .

13. The organic electroluminescence device as claimed in claim 11 , wherein the reactive organic compound is a polymerizable monomer.

14. The organic electroluminescence device as claimed in claim 11 , wherein the reactive substituents each have any one of partial structures represented by the following formulas:

15. The organic electroluminescence device as claimed in claim 11 , wherein when an emission luminance is reduced to 90% of an initial emission luminance by application of the electric current, the concentration of the reactive organic compound in the organic layer is reduced from a concentration before the application of an electric current.

16. The organic electroluminescence device as claimed in claim 11 , wherein a ratio of a concentration (M70) of the reactive organic compound when an emission luminance is reduced to 70% of an initial luminance to a concentration (M90) of the reactive organic compound when a luminance is lowered to 90% of an initial luminance, ΔM (M70/M90) meets the following requirement (1):

0.1≦ΔM<1.0.  requirement (1)

17. The organic electroluminescence device as claimed in claim 11 , wherein at least one of the organic layers satisfies the following expression (2):

1.04 ≦[Tg (90%)/ Tg (initial)]≦1.20  expression (2)

wherein Tg(50%) is a glass transition point when an emission luminance is reduced to 50% of an initial emission luminance and Tg(initial) is a glass transition point before initiating the application of an electric current.

18. The organic electroluminescence device as claimed in claim 17 , wherein the Tg(90%) and the Tg(50%) meet the following expression (3):

1.00 <[Tg (50%)/ Tg (90%)]≦1.05.  expression (3)

19. A lighting device provided with an organic electroluminescence device as claimed in claim 16 .

20. A display device provided with an organic electroluminescence device as claimed in claim 11 .