Effective Selective Area Growth

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Tempe, Arizona
Project Term:
09/18/2017 - 06/17/2021

Technology Description:

Arizona State University (ASU) proposes a comprehensive project to advance fundamental knowledge in the selective area doping of GaN using selective regrowth of gallium nitride (GaN) materials. This will lead to the development of high-performance GaN vertical power transistors. The ASU team aims to develop a better mechanistic understanding of these fundamental materials issues, by focusing on three broad areas. First, they will use powerful characterization methods to study fundamental materials properties such as defects, surface states, and investigate possible materials degradation mechanisms. Next, they will develop innovative epitaxial growth and fabrication processes such as Atomic Layer Etching and novel surface passivations, to tackle the materials engineering challenges related to selective area doping for GaN p-n junctions. Finally, they will apply their research to demonstrate randomly placed, reliable, contactable p-n junctions for GaN vertical power devices. If successful, this project will provide a path towards high efficiency, high power, small form factor, and high thermal performance GaN vertical power devices.

Potential Impact:

If successful, PNDIODES projects will enable further development of a new class of power converters suitable in a broad range of application areas including automotive, industrial, residential, transportation (rail & ship), aerospace, and utilities.


More energy efficient power electronics could improve the efficiency of the U.S. power sector. They could also significantly improve the reliability and security of the electrical grid.


More efficient power use may help reduce power-related emissions. Low-cost and highly efficient power electronics could also lead to increased adoption of electric vehicles and greater integration of renewable power sources.


Improved power electronics could yield a significant reduction in U.S. electricity consumption, saving American families and businesses money on their power bills.


ARPA-E Program Director:
Dr. Isik Kizilyalli
Project Contact:
Yuji Zhao
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