"

Cookies ussage consent

Our site saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing our site without changing the browser settings you grant us permission to store that information on your device.

Current transport in GaSb /GaInAsSb/GaAlAsSb heterojunction photodiodes

M. AHMETOGLU (AFRAILOV)1,*

Affiliation

  1. Department of Physics, Uludag University, 16059, Görukle, Bursa, Turkey

Abstract

Current flow mechanisms have been studied for Liquid Phase Epitaxy (LPE) grown n -GaSb / n -GaInAsSb / p -GaAlAsSb heterostructures lattice-matched to GaSb substrates. An experimental investigation of current-voltage characteristics has been done in the temperature range from 80–300K, and have been determined the mechanism of the flow of dark current. The qualitative comparison of experimental results with theory shows that, in the high temperature region the diffusion mechanism of the current flow dominates in both, forward and reverse biases. The tunneling charge has the key role at low temperatures under both forward and reverse biases.

Keywords

Current flow mechanisms, Type II staggered-lineup, Broken-gap heterojunctions.

Citation

M. AHMETOGLU (AFRAILOV), Current transport in GaSb /GaInAsSb/GaAlAsSb heterojunction photodiodes, Optoelectronics and Advanced Materials - Rapid Communications, 3, 6, June 2009, pp.604-607 (2009).

Submitted at: April 29, 2009

Accepted at: June 15, 2009