A Model of Numerical Calculation of Conductivity for III-V MBE Epilayers Using a Hall Device

Author:

Wolkenberg Andrzej12

Affiliation:

1. Institute of Electron Technology, Aleja Lotnikow 32/46, 02-668 Warsaw, Poland

2. Institute of Materials Engineering, Czestochowa University of Technology, Aleja Armii Krajowej 19, 42-200 Czestochowa, Poland

Abstract

An electrical conduction versus temperature model using a Hall device was developed. In the case of InAs, InGaAs, and GaAs MBE epilayers, the prediction agrees well with the experimental results. Herein, we explain here how these calculated fractions of total conductivity describe the measured values. The method allows for the calculation of the carrier concentration and mobility of each component of a multicarrier system. The extracted concentrations are used to characterise the different components of charge transport in the active layer. The conductance values G [S] of these components of charge transport were obtained. Also the scattering events for the investigated samples are presented. The analysis of the experimental results for three semiconductor compositions and different concentrations demonstrates the utility of our method in comparing the conductance of each component of the multilayered system as a function of temperature.

Funder

University of Warsaw

Publisher

Hindawi Limited

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