Doped graphene electronic materials
View Patent ↗A graphene substrate is doped with one or more functional groups to form an electronic device.
1. A method of making an electronic device, comprising: applying a first dopant species functional group to a graphene substrate in a first predetermined pattern to form a first doped region of the electronic device; and applying a second dopant species functional group in a second predetermined pattern to the graphene substrate patterned with the first dopant species functional group to form a second doped region of the electronic device, wherein the second predetermined pattern is at least partially determined by the application of the first dopant species functional group.
2. The method of claim 1 , further comprising removing at least a portion of the first dopant species functional group from the graphene substrate subsequent to applying the second dopant species functional group.
3. The method of claim 1 , wherein the first predetermined pattern is aligned in a predetermined relationship to a crystal direction of the graphene substrate.
4. The method of claim 3 , wherein the second predetermined pattern is aligned in a predetermined relationship to a crystal direction of the graphene substrate.
5. The method of claim 1 , wherein applying the first dopant species functional group includes selectively exposing the substrate to a chemical solution.
6. The method of claim 1 , wherein applying the first dopant species functional group includes lithographically masking the graphene substrate.
7. The method of claim 1 , wherein applying the first dopant species functional group includes applying a spatially patterned electrical potential to the graphene substrate.
8. The method of claim 1 , wherein applying the first dopant species functional group includes introducing a defect into the graphene substrate.
9. The method of claim 1 , wherein the first dopant species functional group at least partially excludes the second dopant species functional group from depositing on the graphene substrate.
10. A method of making an electronic device, comprising: applying a first dopant species functional group to dope a graphene substrate; and applying a second dopant species functional group to the first dopant species functional group in a predetermined pattern to define a doping region in the graphene substrate for the electronic device.
11. The method of claim 10 , wherein the second dopant species functional group bonds to the first dopant species functional group.
12. The method of claim 10 , wherein the second dopant species functional group exchanges with the first dopant species functional group.
13. The method of claim 10 , wherein after application of the second dopant species functional group, the graphene substrate includes a first region and a second region differing in at least one electrical property.
14. The method of claim 10 , wherein the predetermined pattern is aligned in a predetermined relationship to a crystal direction of the graphene substrate.
15. The method of claim 10 , wherein applying the first dopant species functional group includes selectively exposing the substrate to a chemical solution.
16. The method of claim 10 , wherein applying the first dopant species functional group includes lithographically masking the graphene substrate.
17. The method of claim 10 , wherein applying the first dopant species functional group includes applying a spatially patterned electrical potential to the graphene substrate.
18. The method of claim 10 , wherein applying the first dopant species functional group includes introducing a defect into the graphene substrate.
19. The method of claim 10 , wherein the first dopant species functional group at least partially excludes the second dopant species functional group from depositing on the graphene substrate.