Device for detecting/storing electromagnetic beams, method for making same, and use thereof and imager incorporating same
US7982251B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 13, 2007 |
| Grant date | Jul 19, 2011 |
| Priority date | — |
| Expiry date | Jun 24, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S977/954
- WIPO fieldMicro-structural and nano-technology
- WIPO sectorChemistry
Abstract
The invention concerns a device for detecting and storing electromagnetic beams, an imager incorporating same, a method for making said device and use thereof. The inventive device comprises a field-effect phototransistor including: two source and drain contact electrodes, an electrical conduction unit which is connected to the two contact electrodes and which is coated with a photosensitive polymeric coating capable of absorbing the beams, of detecting, of generating in response the loads detected by said unit and of storing said loads, and a gate electrode which is capable of controlling the electric current in the unit as well as spatially distributing the loads in said coating and which is separated from said unit by a gate dielectric. Said device is configured such that the conduction unit comprises at least one semiconductive nanotube or nanowire capable of supplying an electric signal representing a modification of the conductivity of the phototransistor having been exposed to a beam, and that the gate dielectric has a thickness and a permittivity ∈, which satisfy ∈r>0.2 nm*1, so that the conductivity after exposition may be electrically reset in a reduced time and that the …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.