Lateral theta device
US5712491A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 30, 1992 |
| Grant date | Jan 27, 1998 |
| Priority date | — |
| Expiry date | Jun 30, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10D62/165
Abstract
A lateral THETA device formed of a sandwich of first and second layers of semiconductor material forming a heterojunction therebetween and a two dimensional carrier gas in the second layer. First and second spaced electrodes are disposed on the surface of the first layer for inducing first and second potential barriers to the flow of charge carriers in the carrier gas. Ohmic contacts are deposited in the base region defined between the electrodes and in the emitter and collector regions defined on opposing sides of the electrodes. The width of the first electrode is formed narrow enough so that the first potential barrier beneath the electrode permits tunnelling of charge carriers into the base region. The width of the second electrode is wide enough so that the second potential barrier prevents tunnelling. Electrons tunnelling through the first barrier are hot and ballistically move through the base region to the collector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.