Fabrication of organic semiconductor devices using ink jet printing
AssigneeThe Trustees of Princeton University
InventorsJames C. Sturm, Chung Chih Wu, Duane Marcy, Thomas R. Hebner
Life of this patent
Estimating the term…
Abstract
A method of fabricating semiconductor devices using ink-jet printing is provided to directly deposit patterned polymer films to create OLED's and other semiconductor devices. The luminescence of poly-vinylcarbazol (PVK) films, with dyes of coumarin 6 (C6), coumarin 47 (C47), and nile red was similar to that of films of the same composition deposited by spin-coating. Light emitting diodes with low turn-on voltages were also fabricated in PVK doped with C6 deposited by ink-jet printing.
Claims51
A process for forming a pattern on a substrate by deposition of an organic material comprising the steps of:
- depositing a semiconducting organic material in a solvent onto a substrate by ink-jet printing;
- and
- evaporating the solvent, whereby said organic material remains on the substrate.
A process for making organic light emitting diodes comprising the steps of:
- depositing a semiconducting organic material in a solvent onto a substrate by ink-jet printing;
- and
- evaporating the solvent, said organic material remaining on the substrate.
A process of forming thin film field effect transistors comprising the steps of:
- forming a gate electrode on a substrate;
- forming a gate insulator over said gate electrode;
- forming a polymer semiconducting layer on said insulator by ink-jet printing;
- and
- forming source and drain contacts on said semiconducting layer.
A process for forming a pattern on a substrate by deposition of an organic material comprising the steps of:
- depositing organic material including polyvinylcarbazol film in a solvent onto a substrate by ink-jet printing;
- and
- evaporating the solvent, whereby said organic material remains on the substrate.
A process for making organic light emitting diodes comprising the steps of:
- depositing organic material including polyvinylcarbazol film in a solvent onto a substrate by ink-jet printing;
- and
- evaporating the solvent, said organic material remaining on the substrate.
Dependencies are inferred from the claim text.