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