First-principles calculations of structural, electrical, and optical properties of ultra-wide bandgap (AlGa)O alloys

JB Varley - Journal of Materials Research, 2021 - Springer
Alloys between Ga 2 O 3 and Al 2 O 3 (AGO) present a rich material space exhibiting
numerous structural phases with unique optoelectronic properties that make them attractive …

[HTML][HTML] Deep level defect states in β-, α-, and ɛ-Ga2O3 crystals and films: Impact on device performance

AY Polyakov, VI Nikolaev, EB Yakimov, F Ren… - Journal of Vacuum …, 2022 - pubs.aip.org
A review is given of reported trap states in the bandgaps of different polymorphs of the
emerging ultrawide bandgap semiconductor Ga 2 O 3. The commonly observed defect …

Scaled β-Ga2O3 thin channel MOSFET with 5.4 MV/cm average breakdown field and near 50 GHz fMAX

CN Saha, A Vaidya, AFM Bhuiyan, L Meng… - Applied Physics …, 2023 - pubs.aip.org
This Letter reports a high performance β-Ga 2 O 3 thin channel MOSFET with T gate and
degenerately doped (n++) source/drain contacts regrown by metal organic chemical vapor …

Enhancement Mode β-(AlxGa1-x)2O3/Ga2O3 Heterostructure FET (HFET) With High Transconductance and Cutoff Frequency

A Vaidya, CN Saha, U Singisetti - IEEE Electron Device Letters, 2021 - ieeexplore.ieee.org
This letter reports-(Al x Ga 1-x) 2 O 3/Ga 2 O 3 (AlGaO/GaO) heterostructure FETs (HFETs)
with significant improvement of peak transconductance (gm), current and power gain cutoff …

β-(AlxGa1− x) 2O3/Ga2O3 heterostructure Schottky diodes for improved VBR2/RON

PP Sundaram, F Alema, A Osinsky… - Journal of Vacuum …, 2022 - pubs.aip.org
We propose and demonstrate the use of a β-(Al x Ga 1–x) 2 O 3 capping layer to achieve
increased breakdown voltage, V BR, and V BR 2/R ON figure of merit in β-Ga 2 O 3 Schottky …

[HTML][HTML] Schottky diode characteristics on high-growth rate LPCVD β-Ga2O3 films on (010) and (001) Ga2O3 substrates

S Saha, L Meng, Z Feng… - Applied Physics …, 2022 - pubs.aip.org
High crystalline quality thick β-Ga 2 O 3 drift layers are essential for multi-kV vertical power
devices. Low-pressure chemical vapor deposition (LPCVD) is suitable for achieving high …

[HTML][HTML] Temperature dependent pulsed IV and RF characterization of β-(AlxGa1− x) 2O3/Ga2O3 hetero-structure FET with ex situ passivation

CN Saha, A Vaidya, U Singisetti - Applied Physics Letters, 2022 - pubs.aip.org
In this work, we report a study of the temperature dependent pulsed current voltage and RF
characterization of β-(Al x Ga 1− x) 2 O 3/Ga 2 O 3 hetero-structure FETs (HFETs) before and …

Low field transport calculation of 2-dimensional electron gas in β-(AlxGa1− x) 2O3/Ga2O3 heterostructures

A Kumar, K Ghosh, U Singisetti - Journal of Applied Physics, 2020 - pubs.aip.org
ABSTRACT β-Gallium oxide (β-Ga2O3) is an emerging wide bandgap semiconductor with
potential applications in power and RF electronic systems. Previous theoretical calculation …

Probing structural and chemical evolution in (AlxGa1− x) 2O3 using atom probe tomography: A review

B Mazumder, J Sarker - Journal of Materials Research, 2021 - Springer
Abstract (Al x Ga 1− x) 2 O 3 is a novel ultra‐wide bandgap semiconductor with the potential
to dominate future power electronics industries. High‐performance devices demand high Al …

Progression of group-III sesquioxides: epitaxy, solubility and desorption

A Hassa, M Grundmann… - Journal of Physics D …, 2021 - iopscience.iop.org
In recent years, ultra-wide bandgap semiconductors have increasingly moved into scientific
focus due to their outstanding material properties, making them promising candidates for …