Thin film transistors using solution processed pentacene precursor as organic semiconductor
US6963080B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 20, 2002 |
| Grant date | Nov 8, 2005 |
| Priority date | — |
| Expiry date | Mar 5, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K85/113
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention describes thin film transistors in which the active channel layer is a thin film of a polycyclic aromatic compound, such as, pentacene, prepared by solution processing a soluble precursor of the polycyclic aromatic compound on a substrate followed by heating to a moderate temperature to convert the precursor back to the polycyclic aromatic compound. The soluble precursors of the polycyclic aromatic compounds are organic solvent-soluble Diels-Alder adducts of polycyclic aromatic compounds, such as, oligothiophene, perylene, benzo[ghi]perylene, coronene and a polyacene with a variety of dienophiles that contain at least one heteroatom. The Diels-Alder adducts can be converted back to pentacene by retro-Diels-Alder reaction at moderate (60-250° C.) temperatures both in bulk, in solution or as thin-films.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.