Wide and Ultra-Wide Bandgap Semiconductors

Our research is exploring what wide and ultra-wide bandgap semiconductors can really do. By working with materials like gallium nitride (GaN), aluminum gallium nitride (AlGaN), and aluminum nitride (AlN), we’re building devices that can handle higher voltages, faster speeds, and hotter temperatures—perfect for tough jobs in transportation, energy, aerospace, and communications.

These kinds of materials are a big deal for industries that need electronics to be more efficient and more durable. Whether it’s powering electric vehicles, managing renewable energy, or supporting high-frequency radar and wireless systems, we’re figuring out how to grow and design high-aluminum-content materials in ways that make them easier to manufacture and scale.

And we’re not just doing the research—we’re building the tools to make it real. With advanced fabrication and prototyping capabilities, we’re helping turn these materials into practical technologies. From growth to packaging, we’re working across the full stack to get new ideas out of the lab and into the world.

Image of a wide bandgap experiment in UW-Madison research lab
UW–Madison’s new Ultra-Wide Bandgap Semiconductor Metal-Organic Chemical Vapor Deposition (MOCVD) Laboratory strengthens its role as a national hub for ultra-wide bandgap semiconductor research, supporting next-gen materials development and collaboration across academia and industry.

Research Faculty and Staff

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Joseph Andrews

Position title: Alfred Fritz Assistant Professor

Research lab website

Mechanical Engineering

  • Printed and flexible electronics
  • Electronically transduced biosensors
  • Print process control systems
  • Electronics from nanomaterials
  • Sensor design and validation
  • Distributed sensing arrays
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Chang-Beom Eom

Position title: Raymond R. Holton Chair for Engineering and Theodore H. Geballe Professor

Research lab website

Materials Science & Engineering

  • Nanostructure fabrications of novel materials
  • Hetroepitaxy of complex oxide thin films and heterostructures
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Chirag Gupta

Position title: Assistant Professor

Research lab website

Electrical & Computer Engineering

  • Semiconductor devices (WBG and UWBG)
  • Group III-nitrides (GaN) and Oxides (GaOx)
  • RF and power electronics: HEMTs and MOSFETs
  • Optoelectronics (LEDs, LASERs)
  • Lattice engineering
  • Quantum applications
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Mahima Gupta

Position title: Thomas A. Lipo Assistant Professor

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Electrical & Computer Engineering

  • Power electronics conversion & control
  • Modular multi-level power converters
  • Motor drive systems
  • Application of wideband gap semiconductor devices
  • Electromagnetic interference issues due to power electronics circuits
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Charlie Hirst

Position title: Steven J. and Teresa M. Zinkle Nuclear Materials Assistant Professor

Research lab website

Nuclear Engineering & Engineering Physics

  • Nuclear materials
  • Radiation damage
  • In situ experiments
  • Coupled extremes
  • Irradiation creep mechanisms
  • Gradient experiments
  • Thermal analysis
  • Defect recovery stages
  • Differential Scanning Calorimetry
  • Stored energy
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Akhilesh Jaiswal

Position title: Assistant Professor

Research lab website

Electrical & Computer Engineering

  • Device-circuit co-design using existing and alternate state variables for future computing systems
  • Processing-in-pixel and processing-in-sensor technology
  • In-memory-computing
  • Hardware-software co-design for efficient distributed computing
  • Bio-inspired paradigms for sensing and compute, including neuromorphic systems
  • Electro-optic general-purpose computing
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Daniel Ludois

Position title: Jim and Anne Sorden Professor H.I. Romnes Fellow

Research lab website

Electrical & Computer Engineering

  • Power electronics
  • Electric machines
  • Non-contact power transfer
  • Sustainable engineering technologies and practices
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Zhenqiang Ma

Position title: Lynn H. Matthias Professor in Engineering and Vilas Distinguished Achievement Professor

Research lab website

Electrical & Computer Engineering

  • Lattice mis-matched semiconductor heterostructures: materials, physics and related various device applications
  • Flexible/stretchable/wearable electronics/optoelectronics
  • Bioelectronics (ECG/ECoG), neural and neuron interface engineering
  • High-speed RF devices, optoelectronic devices and nanophotonics
  • Semiconductor materials processing and heterogeneous integration
  • Flexible electronics, flexible optoelectronics and flexible photonics
  • Energy conversion semiconductor devices
  • Bioelectronics and biomimetics
  • Semiconductor device physics
  • Power electronics

 

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Luke Mawst

Position title: Grainger STAR Professor Emeritus in Engineering

  • Semiconductor lasers
  • Metalorganic chemical vapor deposition (MOCVD) growth of semiconductors
  • III/V compound semiconductor materials and devices
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Shubhra Pasayat

Position title: Assistant Professor

Research lab website

Electrical & Computer Engineering

  • MOCVD growth of Group III-nitrides and Oxides
  • Optoelectronics: Micro-LEDs, LASERs
  • RF and Power Electronics: HEMTs and MOSFETs
  • Bio-Photonics
  • Lattice Engineering
  • Quantum Materials
  • Porous and flexible materials
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Jinia Roy

Position title: Thomas A. Lipo Assistant Professor

Website

Electrical & Computer Engineering

  • Wideband gap based power converters for pulsed power, renewable, and EV applications
  • Analysis, simulation, and experimental validation
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Bulent Sarlioglu

Position title: Professor

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Electrical & Computer Engineering

  • Electric machines, drives, power electronics
  • Electric actuation systems
  • Automotive, aerospace, naval and renewable energy applications
  • Complex and interdisciplinary power system architecture
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Eric Tervo

Position title: Assistant Professor

Research lab website

Electrical & Computer Engineering

  • Semiconductor materials and devices
  • Thermal and luminescent electromagnetic radiation
  • Solid-state thermal energy conversion devices
  • Solar energy conversion
  • Energy policy and economics
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Dan van der Weide

Position title: Grainger Institute for Engineering Professor

Research lab website

Electrical & Computer Engineering

  • Multifunctional scanned probe microscopy
  • Localized spectroscopy of biological and low-dimensional electronic systems
  • Terahertz circuits and devices
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Giri Venkataramanan

Position title: Keith and Jane Morgan Nosbusch Professor in Engineering Education

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Electrical & Computer Engineering

  • Electrical power conversion systems
  • Solar and wind energy technologies
  • Battery energy storage systems
  • Power systems for transportation
  • Industrial drives and processes
  • Microgrids and utility power distribution
  • Empirical and analytical modeling of converters
  • Technology equity and sustainable design
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Paul Voyles

Position title: Harvey D. Spangler Professor

Research lab website

Materials Science & Engineering

  • Electron microscopy, including aberration-corrected Z-contrast STEM, microanalysis by EDS and EELS, and coherent electron nanodiffraction
  • Growth, structure, and defects in functional materials, including spintronics, oxide interfaces, and nanostructures
  • Nanoscale order in glassy materials

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