Performance analysis of gallium nitride-based DH-HEMT with polarization-graded AlGaN back-barrier layer

Document Type

Article

Publication Title

Applied Physics B: Lasers and Optics

Abstract

In this paper, polarization-graded AlGaN back-barrier nanolayer has been introduced to improve the DC and RF parameters of gallium nitride-based high electron mobility transistors (HEMT). To explore the characteristics, both graded and non-graded double heterojunction high electron mobility transistor (DH-HEMT) structures are optimized using SILVACO-ATLAS physical simulator. Enhanced DC and RF parameters have been observed in the optimized graded DH-HEMT. In this paper, we have also studied the development of the quantum wells at the AlGaN/GaN interfaces due to the conduction band discontinuity in both structures.

DOI

10.1007/s00340-023-08042-7

Publication Date

6-1-2023

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