Near infrared emitting organic compounds and organic devices using the same
Certain iridium compounds which may comprise an iridium(III)-ligand complex having the general formula: (C^N) 2 —Ir—(N^N). (C^N) and (N^N) may each represent a ligand coordinated to an iridium atom. The iridium compounds may have a primary phosphorescent photoluminescence peak wavelength in the near-infrared (IR) range. Also, organic devices that use certain iridium compounds. The organic device may comprise an organic layer and the organic layer may comprise any of the iridium compounds disclosed herein. Also, organic devices that use certain metalloporphyrin compounds. The metalloporphyrin compounds may comprise a core porphyrin structure with four pyrrole rings. The metalloporphyrin compounds may have a primary phosphorescent photoluminescence peak wavelength in the near-IR range.
1. An organic light-emitting device comprising:
an anode;
a cathode; and
an organic layer between the anode and the cathode, the organic layer comprising a host material and a metalloporphyrin compound, wherein the metalloporphyrin compound comprises a plurality of pyrrole rings and has a formula:
wherein M is a metal;
wherein each of R 1 to R 4 is independently selected from the group consisting of an aliphatic moiety, aryl moiety, heteroaryl moiety, and macrocycle moiety;
wherein each of R 1 ′ to R 4 ′ is independently selected from the group consisting of a hydrogen, phenyl, mesityl, and methyl;
wherein the metalloporphyrin compound has a primary phosphorescent photoluminescence emission peak wavelength in the near-infrared range; and
wherein the absorption spectrum of the metalloporphyrin compound overlaps with the emission spectrum of the host material.
2. The organic device of claim 1 , wherein the metalloporphyrin compound has a primary phosphorescent photoluminescence emission peak wavelength greater than about 680 nm.
3. The organic device of claim 1 , wherein the metalloporphyrin compound has a primary phosphorescent photoluminescence emission peak with a bandwidth less than about 60 nm.
4. The organic device of claim 1 , wherein each of R 1 to R 4 is an aryl moiety or heteroaryl moiety.
5. The organic device of claim 4 , wherein each of R 1 to R 4 is independently selected from the group consisting of:
6. The organic device of claim 4 , wherein each of R 1 to R 4 is fused to the adjoining pyrrole ring.
7. The organic device of claim 1 , wherein M is platinum.
8. The organic device of claim 1 , wherein each of R 1 ′ to R 4 ′ is a phenyl.
9. The organic device of claim 1 , wherein the metalloporphyrin compound has the formula:
10. The organic device of claim 1 , wherein the organic layer is an emissive layer.
11. The organic device of claim 9 , wherein the organic layer is an emissive layer.
12. The organic device of claim 4 , wherein the organic layer is an emissive layer.
13. The organic device of claim 5 , wherein the organic layer is an emissive layer.
14. The organic device of claim 6 , wherein the organic layer is an emissive layer.
15. The organic device of claim 1 , wherein each of R 1 to R 4 is an aryl or heteroaryl moiety that is fused to the adjoining pyrrole ring, wherein each of R 1 ′ to R 4 ′ is a phenyl, wherein M is platinum, and wherein the organic layer is an emissive layer.
16. The organic device of claim 5 , wherein M is platinum.
17. The organic device of claim 4 , wherein each of R 1 to R 4 is fused to the adjoining pyrrole ring, wherein each of R 1 ′ to R 4 ′ is a phenyl, and wherein M is platinum.