摘要 |
<p>A semiconductor-containing heterostructure including, from bottom to top, a IH-V compound semiconductor buffer layer, a III-V compound semiconductor channel layer, a HI-V compound semiconductor barrier layer, and an optional, yet preferred, IH-V compound semiconductor cap layer is provided. The barrier layer may be doped, or preferably undoped. The HI-V compound semiconductor buffer layer and the HI-V compound semiconductor barrier layer are comprised of materials that have a wider band gap than that of the pi-V compound semiconductor channel layer. Since wide band gap materials are used for the buffer and barrier layer and a narrow band gap material is used for the channel layer, carriers are confined to the channel layer under certain gate bias range. The inventive heterostructure can be employed as a buried channel structure in a field effect transistor.</p> |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION;KIEWRA, EDWARD, W.;KOESTER, STEVEN, J.;SADANA, DEVENDRA, K.;SHAHIDI, GHAVAM;SUN, YANNING |
发明人 |
KIEWRA, EDWARD, W.;KOESTER, STEVEN, J.;SADANA, DEVENDRA, K.;SHAHIDI, GHAVAM;SUN, YANNING |