Influence of interface states and deep levels on output characteristics of InAlAs/InGaAs/InP HEMTs

Autor: Adel Kalboussi, S. Bouzgarrou, Abdelkader Souifi, Na. Sghaier, M.M. Ben Salem
Rok vydání: 2008
Předmět:
Zdroj: Materials Science and Engineering: C. 28:676-679
ISSN: 0928-4931
DOI: 10.1016/j.msec.2007.10.075
Popis: The aim of this work is to study the origin of parasitic effects observed on the output characteristics of InAlAs/InGaAs/InP HEMTs with various buffer layers. I ds − V ds measurements as a function of the temperature have first been performed. Several anomalies were observed such as kink and hysteresis effects. C-DLTS measurements have also been performed. From the obtained results, we have established a strong correlation between parasitic effects observed on the output characteristics and deep levels located near the buffer layer interface.
Databáze: OpenAIRE