Claims
- 1. A quantum-well semiconductor device that senses radiation energy, comprising:
a substrate of a substantially transparent semiconductor material; and a plurality of quantum-well structures, arranged in columnar shapes, and spatially separated from one another by a gap which is electrically insulating, said plurality formed over said substrate to form a periodic array, wherein each quantum-well column includes, a first conductive contact layer formed over said substrate, a quantum-well stack having a plurality of alternating quantum-well layers formed in parallel over said first conductive contact layer and operating to absorb radiation polarized perpendicularly to said quantum-well layers, and a second conductive contact layer formed over said quantum-well stack.
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application is a continuation of U.S. application Ser. No. 09/443,177, filed Nov. 19, 1999, which claims priority from U.S. provisional application Serial No. 60/109,329, filed on Nov. 20, 1998.
Provisional Applications (1)
|
Number |
Date |
Country |
|
60109329 |
Nov 1998 |
US |
Continuations (1)
|
Number |
Date |
Country |
Parent |
09443177 |
Nov 1999 |
US |
Child |
09924209 |
Aug 2001 |
US |