期刊
IEEE ELECTRON DEVICE LETTERS
卷 42, 期 5, 页码 673-676出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LED.2021.3067796
关键词
Stress; MODFETs; HEMTs; Mathematical model; Transient analysis; Wide band gap semiconductors; Electron traps; p-GaN HEMTs; semi-ON-stress; hot electrons; analytical model
资金
- Internet of Things: Sviluppi Metodologici Tecnologici e Applicativi Project
- Italian Ministry of Education, Universities and Research (MIUR) through the Fondo per il Finanziamento dei Dipartimenti Universitari di Eccellenza Initiative (2018-2022) [232/2016]
Hot electron trapping significantly affects the performance of GaN-based HEMTs during hard switching, with a logarithmic time dependence and critical operation within the first 10 microseconds. This was demonstrated through a physics-based model validated by experimental data obtained with a specially designed pulsed-drain current transient setup.
Hot electron trapping can significantly modify the performance of GaN-based HEMTs during hard switching operation. In this letter, we present a physics-based model based on rate equations to model the trapping kinetics of hot-electrons in GaN transistors submitted to semi- ON-state stress. The model is validated through comparison with the experimental data, obtained by means of a pulsed-drain current transient setup developed ad-hoc. Hot-electron trapping is found to have logarithmic time dependence; the first 10 mu s of operation are critical in determining the current collapse during stress.
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