Drain current transient and low-frequency dispersion characterizations in AlGaN/GaN HEMTs - Université de Limoges Accéder directement au contenu
Article Dans Une Revue International Journal of Microwave and Wireless Technologies Année : 2016

Drain current transient and low-frequency dispersion characterizations in AlGaN/GaN HEMTs

Denis Barataud
Agostino Benvegnu
  • Fonction : Auteur
  • PersonId : 965673
Sylvain Laurent
  • Fonction : Auteur
  • PersonId : 918010
Raymond Quéré

Résumé

This paper presents a detailed trap investigation based on combined pulsed I/V measurements, drain current transient (DCT) measurements and low-frequency dispersion measurements of transconductance (LF Y21) and output conductance (LF Y22). DCT characterization is carried out over a 7-decade time scale. LF Y21 and Y22 measurements are carried out over the frequency range from 100 Hz to 1 GHz. These combined measurements were performed at several temperatures for AlGaN/GaN high electron mobility transistors under class AB bias condition and allowed the extraction of the activation energy (Ea) and the capture cross section (σc) of the identified traps. Extensive measurements of these characteristics as a function of device bias are reported in this work to understand the dynamic trap behavior. This paper demonstrated a correlation between LF small-signal (LF Y21 and Y22) and large-signal voltage steps (DCT) results. These measurements allow identifying the same 0.64 eV deep level, attributed to a native defect of GaN, possibly located in the buffer layer.
Fichier non déposé

Dates et versions

hal-01706876 , version 1 (12-02-2018)

Identifiants

Citer

Denis Barataud, Agostino Benvegnu, Davide Bisi, Sylvain Laurent, Matteo Meneghini, et al.. Drain current transient and low-frequency dispersion characterizations in AlGaN/GaN HEMTs. International Journal of Microwave and Wireless Technologies, 2016, 8 (4-5), pp.663 - 672. ⟨10.1017/S1759078716000398⟩. ⟨hal-01706876⟩
82 Consultations
1 Téléchargements

Altmetric

Partager

Gmail Mastodon Facebook X LinkedIn More