Charge injection and transport layers
View Patent ↗Compositions for use in hole transporting layers (HTLs) or hole injection layers (HILs) are provided, as well as methods of making the compositions and devices fabricated from the compositions. OLED devices can be made. The compositions comprise at least one conductive conjugated polymer, at least one semiconducting matrix component that is different from the conductive conjugated polymer, and an optional dopant, and are substantially free of an insulating matrix component.
1. A composition comprising:
(a) at least one conductive conjugated polymer;
(b) at least one semiconducting matrix component that is different from the conductive conjugated polymer in (a); and
(c) at least one dopant;
wherein the composition is substantially free of an insulating matrix component, wherein the composition comprises less than about 3% (w/w) of the insulating matrix component.
2. The composition of claim 1 , wherein the composition consists essentially of the conductive conjugated polymer, the semiconducting matrix component, and the dopant.
3. The composition of claim 1 , wherein the composition comprises less than about 0.1% (w/w) of the insulating matrix component.
4. The composition of claim 1 , wherein the composition comprises less than about 0.01% (w/w) of the insulating matrix component.
5. The composition of claim 1 , wherein the conductive conjugated polymer comprises a polythiophene.
6. The composition of claim 1 , wherein the conductive conjugated polymer comprises a regioregular polythiophene.
7. The composition of claim 1 , wherein the semiconducting polymer comprises a polyaromatic polymer or a polyvinyl aromatic polymer.
8. The composition of claim 1 , wherein the semiconducting matrix component comprises a polymer having one or more repeat units comprising a hole transport compound.
9. The composition of claim 1 , wherein the semiconducting matrix component is a semiconducting small molecule.
10. The composition of claim 1 , wherein the semiconducting matrix component is a triarylamine.
11. A composition according to claim 1 further comprising:
a solvent.
12. A device comprising a hole transport layer or a hole injection layer consisting of the composition of claim 1 .
13. The composition of claim 1 , wherein the conductive conjugated polymer is a regioregular polymer.
14. A composition comprising:
(a) at least one conductive conjugated polymer which is a regioirregular polymer;
(b) at least one semiconducting matrix component that is different from the conductive conjugated polymer in (a); and
(c) at least one dopant;
wherein the composition is substantially free of in insulating matrix component.
15. A composition comprising:
(a) at least one conductive conjugated polymer which is a regioregular 3-substituted polythiophene;
(b) at least one semiconducting matrix component that is different from the conductive conjugated polymer in (a); and
(c) at least one dopant;
wherein the composition is substantially free of in insulating matrix component.
16. The composition of claim 1 , wherein the conductive conjugated polymer is a 3,4-substituted polythiophene.
17. The composition of claim 14 , wherein the composition comprises less than 0.1% (w/w) of the insulating matrix component.
18. The composition of claim 14 , wherein the composition comprises less than 0.01% (w/w) of the insulating matrix component.
19. The composition of claim 15 , wherein the composition comprises less than 0.1% (w/w) of the insulating matrix component.
20. The composition of claim 15 , wherein the composition comprises less than 0.01% (w/w) of the insulating matrix component.