Patent ID: 11961940
Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. Optoelectronic device comprising:
a vertical stack of a first doped semiconductor layer of a first conductivity type, of a second doped semiconductor layer of a second conductivity type forming with the first doped semiconductor layer a PN junction, and of a third conductive layer arranged on top of and in contact with a surface of the second doped semiconductor layer opposite to the first doped semiconductor layer;
a peripheral trench crossing the third conductive layer and the second doped semiconductor layer, said peripheral trench laterally delimiting a portion of the third conductive layer and a portion of the second doped semiconductor layer;
in said peripheral trench, a conductive spacer made of metal and in contact with a lateral side of said portion of the third conductive layer; and
in said peripheral trench, an insulated conductive gate comprising a gate insulator layer extending on top of and in contact with a lateral side of the conductive spacer and on top of and in contact with a lateral side of said portion of the second doped semiconductor layer, and a conductive gate layer arranged on top of and in contact with a surface of the gate insulator layer opposite to the conductive spacer and to said portion of the second doped semiconductor layer.