Organic electronic devices, compositions, and methods
View Patent ↗Organic electronic devices, compositions, and methods are disclosed that employ electrically conductive nanowires and conducting materials such as conjugated polymers such as sulfonated regioregular polythiophenes which provide high device performance such as good solar cell efficiency. Devices requiring transparent conductors that are resilient to physical stresses can be fabricated, with reduced corrosion problems.
1. A device comprising:
a substrate;
an electrode layer disposed on the substrate, the electrode layer comprising a plurality of electrically conductive nanowires; and
at least one hole injection layer, hole transport layer, overcoat layer, or hole collection layer disposed on the electrode layer and comprising a water soluble or water dispersible polythiophene comprising (i) at least one organic substituent, and (ii) at least one sulfonate substituent comprising sulfonate sulfur bonded directly to the polythiophene backbone.
2. The device according to claim 1 , wherein the device comprises an organic photovoltaic device with a power conversion efficiency η greater than about 2%.
3. The device according to claim 1 , wherein the polythiophene comprises a regular head-to-tail coupled poly(3-substituted thiophene).
4. The device according to claim 3 , wherein the polythiophene comprises a regular head-to-tail coupled poly(3-substituted thiophene) having a degree of regioregularity of at least about 90% apart from sulfonation.
5. The device according to claim 1 , wherein the polythiophene comprises a water soluble polythiophene.
6. The device according to claim 1 , wherein the polythiophene comprises a doped polythiophene.
7. The device according to claim 1 , wherein the polythiophene comprises at least one alkylene oxide, alkoxy or alkyl substituent.
8. The device according to claim 1 , wherein the polythiophene comprises a polythiophene characterized by an acid number of about 250 or less mg KOH/g polymer.
9. The device according to claim 1 , wherein the nanowires are silver nanowires.
10. The device according to claim 1 , wherein the device is an organic photovoltaic device.
11. The device according to claim 1 , wherein the device is an organic light emitting diode device.
12. The device according to claim 1 , wherein the nanowires are metal nanowires.
13. The device according to claim 1 , wherein the nanowires are carbon nanotubes.
14. The device according to claim 1 , wherein the nanowires are metal oxide nanowires.
15. The device according to claim 1 , wherein the nanowires are conductive polymer fiber nanowires.
16. The device according to claim 1 , wherein the nanowires have a length to diameter ratio greater than 10.
17. The device according to claim 1 , wherein:
the polythiophene comprises a regular head-to-tail coupled poly(3-substituted thiophene), and
the nanowires are silver nanowires.
18. The device according to claim 1 , wherein:
the polythiophene comprises a regular head-to-tail coupled poly(3-substituted thiophene),
the polythiophene comprises at least one alkylene oxide, alkoxy or alkyl substituent, and
the nanowires are silver nanowires.
19. The device according to claim 1 , wherein:
the polythiophene comprises a regular head-to-tail coupled poly(3-substituted thiophene),
the polythiophene comprises at least one alkylene oxide, alkoxy or alkyl substituent,
the polythiophene comprises a polythiophene characterized by an acid number of about 250 or less mg KOH/g polymer, and
the nanowires are silver nanowires.