Transient electron transport in the ternary alloys AlxGa1-xN, InxGa1-xN, AlxIn1-xN using the Monte Carlo method of simulation.

Nadia  BACHIR; Nasr Eddine Chabane Sari

Nadia BACHIR Unity of Research of Materials and Renewable Energies (URMER), Department of Physics, University of Tlemcen BP: 119 TLEMCEN 13000 ALGERIA
Nasr Eddine Chabane Sari Unity of Research of Materials and Renewable Energies (URMER), Department of Physics, University of Tlemcen BP: 119 TLEMCEN 13000 ALGERIA

Keywords: AlxGa1-xN, InxGa1-xN, InxAl1-xN, Electric transport, Monte Carlo method of simulation, Transitional mode

Abstract

The transient electron transport and overspeed phenomenon in the binary cubic compounds GaN, InN and AlN and their ternary alloys AlGaN, InGaN and InAlN are examined and compared. For all these alloys, the overspeed phenomenon occurs beyond the critical field at which electrons can pass from the valence band to the conduction band. This field is relatively large for these alloys, particularly when the molar fraction of aluminum is large in the InAlN and AlGaN alloys. This field can reach 500 kV/cm for AlN and it is smaller in alloys with high indium concentration. It is 70 kV/cm for InN. Thus, the critical field for these alloys can vary from kV/cm to 500 kV/cm, including 150 KV/cm for GaN. The overspeed phenomenon becomes greater in the presence of Indium and it is less important in the presence of Aluminum. The present work focuses on the electronic transport in the alloys AlxGa1-xN, In_xGa_1-xN and In_xAl_1-xN in the transitional mode by using the Monte Carlo method of simulation which is the most appropriate.

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