Search Results - "Jacobs, Alan G"
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Detecting defects that reduce breakdown voltage using machine learning and optical profilometry
Published in Scientific reports (28-03-2024)“…Semiconductor wafer manufacturing relies on the precise control of various performance metrics to ensure the quality and reliability of integrated circuits. In…”
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Optimizing performance and yield of vertical GaN diodes using wafer scale optical techniques
Published in Scientific reports (13-01-2022)“…To improve the manufacturing of vertical GaN devices for power electronics applications, the effects of defects in GaN substrates need to be better understood…”
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Using machine learning with optical profilometry for GaN wafer screening
Published in Scientific reports (27-02-2023)“…To improve the manufacturing process of GaN wafers, inexpensive wafer screening techniques are required to both provide feedback to the manufacturing process…”
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Role of Capping Material and GaN Polarity on Mg Ion Implantation Activation
Published in Physica status solidi. A, Applications and materials science (01-04-2020)“…Ion implantation of magnesium for p‐type GaN presents many opportunities; however, activation has proven difficult due to the decomposition of GaN at relevant…”
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Kinetics of Block Copolymer Phase Segregation during Sub-millisecond Transient Thermal Annealing
Published in Macromolecules (13-09-2016)“…Early stage phase segregation of block copolymers (BCPs) critically impacts the material’s final structural properties, and understanding the kinetics of these…”
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Efficient Activation and High Mobility of Ion-Implanted Silicon for Next-Generation GaN Devices
Published in Crystals (Basel) (27-04-2023)“…Selective area doping via ion implantation is crucial to the implementation of most modern devices and the provision of reasonable device design latitude for…”
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Lateral Temperature-Gradient Method for High-Throughput Characterization of Material Processing by Millisecond Laser Annealing
Published in ACS combinatorial science (12-09-2016)“…A high-throughput method for characterizing the temperature dependence of material properties following microsecond to millisecond thermal annealing,…”
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Impact of Anode Thickness on Breakdown Mechanisms in Vertical GaN PiN Diodes with Planar Edge Termination
Published in Crystals (Basel) (01-05-2022)“…GaN vertical PiN diodes with different anode thicknesses were fabricated on three native GaN wafers with the same p-layer doping concentrations, and planar…”
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10 kV Ga2O3 Charge-Balance Schottky Rectifier Operational at 200 °C
Published in IEEE electron device letters (19-06-2023)“…This work demonstrates a lateral Ga 2 O 3 Schottky barrier diode (SBD) with a breakdown voltage ( BV ) over 10 kV, the highest BV reported in Ga 2 O 3 devices…”
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Ultrafast Self-Assembly of Sub-10 nm Block Copolymer Nanostructures by Solvent-Free High-Temperature Laser Annealing
Published in ACS applied materials & interfaces (20-09-2017)“…Laser spike annealing was applied to PS-b-PDMS diblock copolymers to induce short-time (millisecond time scale), high-temperature (300 to 700 °C) microphase…”
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Activation of implanted Si, Ge, and Sn donors in high-resistivity halide vapor phase epitaxial β-Ga2O3:N with high mobility
Published in Applied physics letters (07-11-2022)“…Activation of implanted donors into a highly-resistive, nitrogen-doped homoepitaxial β-Ga2O3 has been investigated. Nitrogen acceptors with the concentration…”
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12
PtOx Schottky Contacts on Degenerately Doped 2¯01β-Ga2O3 Substrates
Published in Journal of electronic materials (01-06-2024)“…Platinum oxide (PtO x ) Schottky contacts on degenerately doped β -Ga 2 O 3 substrates show an increased barrier height of 85% and 64% when compared to nickel…”
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13
Assessment of channel temperature in β-(AlxGa1−x)2O3/Ga2O3 heterostructure field-effect transistors using visible wavelength thermoreflectance thermal imaging
Published in Applied physics letters (29-01-2024)“…This work demonstrates direct, rapid 2D thermal mapping measurement capabilities of the ultrawide bandgap semiconductor channel of lateral…”
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Long-wavelength dielectric properties and infrared active optical phonon modes of molecular beam epitaxy ScxAl1−xN determined by infrared spectroscopic ellipsometry
Published in Applied physics letters (07-12-2020)“…Tuning the optical, electronic, and long-wavelength properties of group-III nitride alloys can be achieved by alloying AlN with ScN. We report here on the…”
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Hybrid Edge Termination for High-Voltage Vertical GaN Devices: Empirical Validation and Robust Processing Tolerance
Published in IEEE transactions on electron devices (01-06-2024)“…This study presents empirical validation of a simulated novel hybrid edge termination (HET) structure with planar ion implantation processing for vertical…”
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Novel Codoping Moiety to Achieve Enhanced P‐Type Doping in GaN by Ion Implantation
Published in Physica status solidi. A, Applications and materials science (01-08-2023)“…Codoping of gallium nitride for improved acceptor ionization has long been theorized; however, reduction to practice proves difficult via growth. Herein,…”
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Experimental Validation of Robust Hybrid Edge Termination Structures in Vertical GaN p-i-n Diodes With Avalanche Capability
Published in IEEE electron device letters (01-05-2024)“…Vertical gallium nitride (GaN) p-i-n diodes with a planar hybrid edge termination (HET) experimentally demonstrate avalanche capability. The HET consists of a…”
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Suppression of Enhanced Magnesium Diffusion During High‐Pressure Annealing of Implanted GaN
Published in Physica status solidi. A, Applications and materials science (01-11-2024)“…Activation of ion‐implanted p‐type dopants in gallium nitride has demonstrated great progress utilizing high pressures to enable novel and traditional device…”
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Temperature Excursions Due to the Reaction Heat Produced by Atomic Layer Deposition on Nanostructured Substrates
Published in Chemistry of materials (08-12-2020)“…Many atomic layer deposition (ALD) reactions are highly exothermic, with some likely releasing hundreds of kJ/mol per cycle. In ALD on conventional substrates…”
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Reduced temperature in lateral (AlxGa1−x)2O3/Ga2O3 heterojunction field effect transistor capped with nanocrystalline diamond
Published in Applied physics letters (08-04-2024)“…The low thermal conductivity of β-Ga2O3 is a significant concern for maximizing the potential of this ultra-wide bandgap semiconductor as a power switching…”
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