Patent ID: 11967665
Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G  H

Claim 8:
9. A detection structure for detecting electromagnetic radiations, the structure comprising:
a MOS transistor as a transducer,
the MOS transistor comprising:
a first and a second zone of a given conductivity type and a third zone of a first conductivity type opposite to a second conductivity type, the third zone separating the first and second zones from each other, said first, second, and third zones being arranged in a semiconductor layer, the third zone having a first concentration of majority carriers and the first and second zones each having a concentration of majority carriers higher than the first concentration by including a first region and a second region, said first regions having a concentration of majority carriers higher than a second concentration of majority carriers and said second regions having a concentration of majority carriers equal to or lower than said second concentration, said second concentration being higher than the first concentration,
at least one first insulating layer made of at least one first dielectric material in contact with the semiconductor layer and covering said first, second, and third zones,
a first conductive layer made of a first conductive material in contact with the at least one first insulating layer and participating in formation of a gate electrode of the MOS transistor,
a first and second lateral extension element made of a dielectric material in contact with the insulating layer and extending from the first conductive layer opposite to each other, said first and second lateral extension elements at least partly covering the first regions of the first and second zones with one end of each first and second lateral extension elements aligned with a respective flank of the semiconductor layer along a direction perpendicular to a plane of the semiconductor layer,
at least one first and one second metal contact, each of the first and second metal contacts being in contact with the semiconductor layer only on the flank of the semiconductor layer corresponding to the first and second lateral extension elements, respectively, at least one of the first and second metal contacts forming an absorbing element configured to absorb the electromagnetic radiation.