摘要:
A quantum semiconductor device comprising: a plurality of quantum dots formed over a semiconductor substrate; a semiconductor layer formed, burying the said plurality of quantum dots; and a plurality of electrodes formed in respective concavities formed in a surface of the semiconductor layer in respective positions above each of the quantum dots of the said plurality of quantum dots.
摘要:
A compound semiconductor (e.g., GaAs) IC device comprising: a compound semiconductor substrate (1) having a semi-insulating compound surface region; an active element laminated layer (2 to 5) formed on the surface region; an isolation region of a semi-insulating (intrinsic) compound semiconductor (9) which is filled in a groove (7) extending into the surface region through the laminated layer (2 to 5); and active elements formed in the isolated regions (8) of the laminated layer (2 to 5), respectively.
摘要:
A high-speed semiconductor device comprising an emitter potential barrier layer (2) disposed between an emitter layer (1) and a base layer (3), a collector layer (5), and a collector potential barrier layer (4a) disposed between the base layer (3) and the collector layer (5). The collector potential barrier layer (4a) has a structure having a barrier height changing from a high level to a low level along the direction from the base layer (3) to the collector layer (5), whereby, even when no bias voltage is applied between the collector layer (5) and the emitter layer (1), a collector current can flow through the device.
摘要:
A compound semiconductor (e.g., GaAs) IC device comprising: a compound semiconductor substrate (1) having a semi-insulating compound surface region; an active element laminated layer (2 to 5) formed on the surface region; an isolation region of a semi-insulating (intrinsic) compound semiconductor (9) which is filled in a groove (7) extending into the surface region through the laminated layer (2 to 5); and active elements formed in the isolated regions (8) of the laminated layer (2 to 5), respectively.
摘要:
A quantum semiconductor device comprising: a plurality of quantum dots formed over a semiconductor substrate; a semiconductor layer formed, burying the said plurality of quantum dots; and a plurality of electrodes formed in respective concavities formed in a surface of the semiconductor layer in respective positions above each of the quantum dots of the said plurality of quantum dots.