Organic electroluminescent device
View Patent ↗An organic electroluminescent device including an organic green emission layer comprising a green emission material and a blue emission material. The green emission layer is interposed between a pair of electrodes.
1. An organic electroluminescent device, comprising a green emission layer, comprising:
a green emission material; and
a blue emission material, where the blue emission material is Compound B
wherein the green emission layer is interposed between a pair of electrodes.
2. The organic electroluminescent device of claim 1 ,
wherein a concentration of the blue emission material is in a range of 80 to 120 parts by weight based on 100 parts by weight of the green emission material.
3. The organic electroluminescent device of claim 1 ,
wherein the green emission material comprises:
4. The organic electroluminescent device of claim 1 ,
wherein the emission layer is about 300 Å to 500 Å thick.
5. The organic electroluminescent device of claim 1 , wherein the green emission layer further comprises:
a dopant, where the dopant is
6. The organic electroluminescent device of claim 5 ,
wherein a concentration of the dopant is in the range of 0.2 to 3 parts by weight based on 100 parts of the total weight of the green emission material and the blue emission material.
7. The organic electroluminescent device of claim 1 , further comprising at least a layer selected from the group consisting of:
a hole injection layer;
hole transport layer;
an electron injection layer;
an electron transport layer; and
a hole blocking layer.
8. An organic electroluminescent device, comprising:
a first electrode;
a hole transport layer formed on the first electrode;
a green emission layer comprising a green emission material and a blue emission material and formed on the hole transport layer, where the blue emission material is Compound B
an electron transport layer formed on the green emission layer; and
a second electrode formed on the electron transport layer.
9. The organic electroluminescent device of claim 8 ,
wherein a concentration of the blue emission material is in a range of 80 to 120 parts by weight based on 100 parts by weight of the green emission material.
10. The organic electroluminescent device of claim 8 ,
wherein the green emission material comprises Alq 3 :
11. The organic electroluminescent device of claim 8 , wherein the green emission layer further comprises:
a dopant, where the dopant is C545T:
12. The organic electroluminescent device of claim 11 ,
wherein a concentration of the dopant is in a range of 0.2 to 3 parts by weight based on 100 parts of the total weight of the green emission material and the blue emission material.
13. The organic electroluminescent device of claim 8 , further comprising:
a hole injection layer formed between the first electrode and the hole transport layer.
14. The organic electroluminescent device of claim 8 , further comprising:
an electron injection layer formed between the electron transport layer and the second electrode.