Degradation physics of GaN-based lateral and vertical devices

Autor: F. Masin, Elena Fabris, Marco Barbato, Matteo Borga, Carlo De Santi, A. Nardo, E. Canato, Gaudenzio Meneghesso, F. Chiocchetta, Enrico Zanoni, A. Barbato, Fabiana Rampazzo, Alaleh Tajalli, Maria Ruzzarin, Matteo Meneghini
Rok vydání: 2019
Předmět:
Zdroj: Gallium Nitride Materials and Devices XIV.
DOI: 10.1117/12.2511145
Popis: This paper reviews the most relevant mechanisms responsible for the degradation of GaN-based lateral and vertical electron devices. These components are almost ideal for application in power electronics, but the presence of semiconductor defects and the existence of degradation processes may limit their stability and lifetime. In this paper we focus on the following aspects: (i) the degradation processes induced by off-state conditions and leading to a time-dependent and/or catastrophic breakdown of the devices; (ii) the stability of the gate stack; (iii) the degradation of the electrical performance of vertical GaN transistors and diodes. To discuss these topics, we refer to case studies carried out in our laboratories.
Databáze: OpenAIRE