Commissariat a L'energie Atomique

Commissariat a L'energie Atomique Et Aux Energies Alternatives

Julien Borghetti

Vincent Derycke

Jean-Philippe Bourgoin

Marcelo Goffman

Pascale Mordant

Arianna Filoramo

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 &#x2208;, which satisfy &#x2208;&#x3e;0.2 nm*1, so that the conductivity after exposition may be electrically reset in a reduced time and that the device forms at least one imaging pixel.

Device for detecting/storing electromagnetic beams, method for making same, and use thereof and imager incorporating same

The invention relates to a semiconductor device comprising at least two electrodes and at least one nanotube or nanowire, in particular a carbon nanotube or nanowire, the device including at least one semiconductive nanotube or nanowire having at least one region that is covered at least in part by at least one layer of molecules or nanocrystals of at least one photosensitive material, an electrical connection between said two electrodes being made by at least one nanotube, namely said semiconductive nanotube or nanowire and optionally by at least one other nanotube or nanowire.

Optically-configurable nanotube or nanowire semiconductor device

Growing community of inventors

Cachan, France

Julien Borghetti