Organic light-emitting device
View Patent ↗An organic light-emitting device including: a first electrode; a second electrode; and an organic layer that includes a carrier transport layer and an emission layer and is interposed between the first and second electrodes, wherein the emission layer and the carrier transport layer include the same material.
1. An organic light-emitting device comprising:
a first electrode;
a second electrode; and
an organic layer interposed between the first electrode and the second electrode, the organic layer comprising an electron transport layer and an emission layer different in composition from and adjacent to the electron transport layer,
wherein the material with the highest weight proportion in the emission layer and the material with the highest weight proportion in the electron transport layer are the same material,
wherein the material is bis(10-benzoquinolate) beryllium, bis(2-methyl-8-quinolinoato)(p-phenylphenolato)aluminum(III) (BAlq), bis(2-(2-hydroxyphenyl)benzothiazolate)zinc (ZnBTZ), or bis(2-(2-hydroxypenyl)benzoxazolate)zinc(ZnPBO).
2. The organic light-emitting device of claim 1 , wherein the material is a metal complex.
3. The organic light-emitting device of claim 1 , wherein the material is a metal complex with a central metal atom of beryllium (Be), aluminum (Al), or zinc (Zn).
4. The organic light-emitting device of claim 1 , wherein the material is a metal complex with a central metal atom of beryllium (Be).
5. The organic light-emitting device of claim 1 , wherein the material is a metal complex with a central metal atom of aluminum (Al).
6. The organic light-emitting device of claim 1 , wherein the material is a metal complex with a central metal atom of zinc (Zn).
7. The organic light-emitting device of claim 1 , comprising one selected from the group consisting of:
a structure comprising: first electrode/hole injection layer/hole transport layer/emission layer/electron transport layer/second electrode; a structure comprising: first electrode/hole injection layer/hole transport layer/emission layer/electron transport layer/electron injection layer/second electrode layer; a structure comprising: first electrode/hole injection layer/charge-generating layer/hole transport layer/emission layer/electron transport layer/second electrode; and a structure comprising: first electrode/hole injection layer/charge-generating layer/hole transport layer/emission layer/electron transport layer/electron injection layer/second electrode.
8. The organic light-emitting device of claim 1 , wherein the organic layer further comprises a hole injection layer, a hole transport layer, a functional layer having hole injecting and transporting capabilities, an emission layer, a hole blocking layer, an electron transport layer, an electron injecting layer, or a combination of two or more layers thereof.
9. A display device comprising the organic light-emitting device of claim 1 .
10. A display device comprising the organic light-emitting device of claim 3 .
11. The organic light-emitting device of claim 8 , at least one layer selected from the hole injection layer, the hole transport layer, or the functional layer having hole injecting and transporting capabilities further comprises a charge-generating material.
12. The organic light-emitting device of claim 8 , wherein the electron transport layer of the organic light-emitting device comprises an electron transporting organic material and a metal-containing material.
13. The organic light-emitting device of claim 12 , wherein the metal-containing material comprises a Li complex.