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Title: A trapping tolerant drain current based temperature measurement of β -Ga 2 O 3 MOSFETs

Journal Article · · Applied Physics Letters
DOI: https://doi.org/10.1063/5.0069655 · OSTI ID:1978973

The drain current temperature dependence is an efficient way to determine the channel temperature in semiconductor devices; however, it has been challenging to use due to the potential interference of trapping effects. A trapping tolerant method is proposed, illustrated here for Ga2O3 MOSFETs, making in situ temperature measurements possible, allowing a thermal resistance of 59 K∙mm/W to be measured in Ga2O3 MOSFETs. However, neglecting the effect of trapping causes an error of ~15% in the channel temperature measured using the drain current. 3D simulations show that the measured channel temperature is the average temperature value between source and drain contact.

Research Organization:
Arizona State University, Tempe, AZ (United States); University of Bristol (United Kingdom)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); Royal Academy of Engineering
Grant/Contract Number:
SC0021230
OSTI ID:
1978973
Journal Information:
Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 7 Vol. 120; ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English

References (24)

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Investigations on junction temperature estimation based on junction voltage measurements journal September 2010
Thermal analysis of AlGaN/GaN high-electron-mobility transistors by infrared microscopy journal March 2013
Deep-ultraviolet transparent conductive β-Ga2O3 thin films journal December 2000
Electrical conductivity and lattice expansion of β-Ga2O3 below room temperature journal May 2008
Gallium oxide (Ga 2 O 3 ) metal-semiconductor field-effect transistors on single-crystal β-Ga 2 O 3 (010) substrates journal January 2012
Anisotropic thermal conductivity in single crystal β-gallium oxide journal March 2015
Lattice thermal conductivity in β-Ga2O3 from first principles journal July 2015
Temperature-dependent capacitance–voltage and current–voltage characteristics of Pt/Ga 2 O 3 (001) Schottky barrier diodes fabricated on n –Ga 2 O 3 drift layers grown by halide vapor phase epitaxy journal March 2016
Characterization of channel temperature in Ga 2 O 3 metal-oxide-semiconductor field-effect transistors by electrical measurements and thermal modeling journal November 2016
Anisotropic thermal conductivity of β-Ga 2 O 3 at elevated temperatures: Effect of Sn and Fe dopants journal June 2017
A review of Ga 2 O 3 materials, processing, and devices journal March 2018
$\hbox{Ga}_{2} \hbox{O}_{3}$ Schottky Barrier Diodes Fabricated by Using Single-Crystal $\beta$– $\hbox{Ga}_{2} \hbox{O}_{3}$ (010) Substrates journal April 2013
Field-Plated Ga 2 O 3 MOSFETs With a Breakdown Voltage of Over 750 V journal February 2016
Transient Thermoreflectance for Gate Temperature Assessment in Pulse Operated GaN-Based HEMTs journal September 2016
Pulsed Large Signal RF Performance of Field-Plated Ga 2 O 3 MOSFETs journal October 2018
Raman Thermography of Peak Channel Temperature in $\beta$ -Ga 2 O 3 MOSFETs journal February 2019
Channel Temperature Determination in High-Power AlGaN/GaN HFETs Using Electrical Methods and Raman Spectroscopy journal February 2008
Evaluation of the Schottky Contact Degradation on the Temperature Transient Measurements in GaN HEMTs journal May 2018
Accurate Measurement of Channel Temperature for AlGaN/GaN HEMTs journal November 2018
Self-Heating Characterization of $\beta$ -Ga 2 O 3 Thin-Channel MOSFETs by Pulsed ${I}$ –${V}$ and Raman Nanothermography journal January 2020
In Situ Observation of β-Ga 2 O 3 Schottky Diode Failure Under Forward Biasing Condition journal August 2020
Forward bias degradation and thermal simulations of vertical geometry β-Ga 2 O 3 Schottky rectifiers journal November 2019
Defect States Determining Dynamic Trapping-Detrapping in β-Ga 2 O 3 Field-Effect Transistors journal January 2019

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