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The world's first high voltage GaN-on-diamond power devices

MetadataDetails
Publication Date2015-09-01
AuthorsTurar Baltynov, Vineet Unni, E.M. Sankara Narayanan
InstitutionsUniversity of Sheffield
Citations3

This paper reports the fabrication method and electrical characterization results of the first-ever demonstrated high voltage AlGaN/GaN HEMTs on CVD diamond substrate. Fabricated circular GaN-on-Diamond HEMTs with gate-to-drain drift length of 17 μm and source field plate length of 3 μm show an off-state breakdown voltage of ~ 1100V. Temperature characterization of Capacitance voltage characteristics provides insight on the temperature dependence of V <sub xmlns:mml=ā€œhttp://www.w3.org/1998/Math/MathMLā€ xmlns:xlink=ā€œhttp://www.w3.org/1999/xlinkā€&gt;TH&lt;/sub> and 2DEG sheet carrier concentration in the fabricated devices.

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