Аннотация
The splitting of the delta-layers in the DA-pHEMT heterostructures has resulted in the increase of the spacer's effective thickness and growth of the low-field 2DEG mobility from 4000÷5000 cm2 V-1 s-1 up to 6500 cm2 V-1 s-1 at the temperature of 300 K and 2DEG density of 4.0×1012 cm-2. The 2DEG mobility in the δ-splitted DA-pHEMT heterostructures almost coincides with the mobility in standard pHEMT heterostructures, but the 2DEG density in the DA-pHEMT heterostructures is approximately twice higher. The additional potential barrier in the DA-pHEMT heterostructures formed by the acceptors causes the reduction of the real-space transfer effect. Therefore, the drift saturation velocity in these heterostructures is higher than the drift saturation velocity in standard pHEMT heterostructures.
Язык оригинала | английский |
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Номер статьи | 012051 |
Число страниц | 4 |
Журнал | Journal of Physics: Conference Series |
Том | 864 |
Номер выпуска | 1 |
DOI | |
Состояние | Опубликовано - 15 авг 2017 |