发明名称 |
INFRARED-RADIATION DETECTOR DEVICE |
摘要 |
Bethea-Choi-Levine-Malik-Walker 9-2-8-5-2 A narrow-bandwidth, high-speed infrared radiation detector is based on tunneling of photo-excited electrons out of quantum wells. Infrared radiation incident on a superlattice of doped quantum wells gives rise to intersubband resonance radiation which excites electrons from the ground state into an excited state. A photocurrent results from excited electrons tunneling out of quantum wells. Conveniently, Group III-V materials can be used in device manufacture. Preferably, quantum well potential barriers are shaped so as to facilitate resonant tunneling of photocurrent as compared with dark current. Preferred device operation is at elevated bias voltage, giving rise to enhancement of photocurrent by a quantum-well-avalanche effect. |
申请公布号 |
CA1302546(C) |
申请公布日期 |
1992.06.02 |
申请号 |
CA19880556608 |
申请日期 |
1988.01.15 |
申请人 |
BETHEA, CLYDE G. |
发明人 |
BETHEA, CLYDE G.;CHOI, KWONG-KIT;LEVINE, BARRY F.;MALIK, ROGER J.;WALKER, JOHN F. |
分类号 |
G01J1/02;H01L31/0264;H01L31/0352;H01L31/09;H01L31/10;H01L31/101 |
主分类号 |
G01J1/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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