Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Peter Lagger"'
Publikováno v:
Microelectronics Reliability. 82:62-83
Two particular defects are commonly discussed at the III-N interface: the required donor states, known to exist from the formation of the two-dimensional electron gas (2DEG) below a hetero-barrier, and defect states at the interface or within the die
Publikováno v:
IEEE Transactions on Electron Devices. 61:1022-1030
The transient recovery characteristics of the threshold voltage drift (ΔVth) of GaN-based HEMTs with a SiO2 gate dielectric induced by forward gate bias stress are systematically and comprehensively investigated for stress times from 100 ns to 10 ks
Autor:
Sylvain Delage, Marie-Antoinette di Forte-Poisson, Gottfried Strasser, Erhard Kohn, A. Alexewicz, Clemens Ostermaier, Peter Lagger, Dionyz Pogany, Patrick Herfurth, D. Maier, Mohammed Alomari
Publikováno v:
Microelectronics Reliability. 52:1812-1815
We analyze the degradation of InAlN/GaN HEMTs using a secondary gate electrode placed on top of the SiN passivation layer in between the Schottky gate and drain contact. Although the actual transistor showed only minor degradation during the stress t
Autor:
P. Steinschifter, Peter Lagger, Clemens Ostermaier, Dionyz Pogany, Maria Reiner, Gerhard Prechtl, Rudolf Pietschnig
Publikováno v:
2015 IEEE International Electron Devices Meeting (IEDM).
We report on AlGaN/GaN MIS-HEMTs with a thermally stable dielectric/AlGaN interface induced by plasma fluorination. The plasma treatment leads to a modification of the "native" surface donors and a fundamentally different device and defect behavior.
Autor:
Stefan Donsa, Maria Reiner, H. Mosslacher, H. Naharashi, Gerhard Prechtl, Clemens Ostermaier, Gregor Pobegen, Peter Lagger, Dionyz Pogany, P. Spreitzer, J. Mohamed
Publikováno v:
IRPS
Threshold voltage instabilities are investigated in GaN-based metal-insulator-semiconductor (MIS) high-electron-mobility-transistors (HEMTs) with specially designed on-wafer heaters structures. The heaters are based on metal lines or 2-dimensional el
Publikováno v:
IEEE Electron Device Letters. 34:1112-1114
The very fast dynamics of threshold voltage drift (ΔVth) of GaN-based metal-insulator-semiconductor-HEMTs induced by forward gate bias stress is investigated with a simple oscilloscope based setup. We show that the logarithmic recovery time dependen
Publikováno v:
Applied Physics Letters. 110:173502
Exchange of carriers between the GaN channel and the dielectric/AlGaN interface in AlGaN/GaN metal insulator semiconductor high electron mobility transistors was recently attributed to a serial process of electron transport through the AlGaN barrier
Publikováno v:
2014 IEEE International Reliability Physics Symposium.
An unexpected enhancement of V th drift (ΔV th ) in GaN MIS-HEMTs induced by repetitive forward gate bias stress pulses in contrast to single pulses is found. Further, it is revealed that the slope of ΔV th recovery curves decreases for increasing
Publikováno v:
2012 International Electron Devices Meeting.
GaN-power HEMTs with insulated gate structure suffer from threshold voltage drifts (ΔV th ) under forward gate bias stress. We present a systematical approach to characterize the phenomenon and understand the dominant physical mechanisms causing thi
Autor:
M. Oposich, Gottfried Strasser, O. Bethge, Peter Lagger, Dionyz Pogany, Mattia Capriotti, Clément Fleury, Clemens Ostermaier
Publikováno v:
Journal of Applied Physics. 117:024506
We provide theoretical and simulation analysis of the small signal response of SiO2/AlGaN/GaN metal insulator semiconductor (MIS) capacitors from depletion to spill over region, where the AlGaN/SiO2 interface is accumulated with free electrons. A lum