High electron mobility transistors exhibiting dual depletion and methods of manufacturing the same

摘要

High electron mobility transistors (HEMT) exhibiting dual depletion and methods of manufacturing the same. The HEMT includes a source electrode (28), a gate electrode (30) and a drain electrode (32) disposed on a plurality of semiconductor layers having different polarities. A dual depletion region (AZ) exists between the source electrode and the drain electrode. The plurality of semiconductor layers includes an upper material layer (26), an intermediate material layer (22) and a lower material layer (20), and a polarity of the intermediate material layer is different from polarities of the upper material layer and the lower material layer.