Wolfspeed, Inc.

David P Malta

Valeri Fedorovich Tsvetkov

Robert Tyler Leonard

Simon Bubel

Yuri Khlebnikov

Elif Balkas

Kathryn A O'Hara

Silicon carbide (SiC) crystalline materials and related methods are disclosed that provide SiC crystalline materials with reduced optical absorption. In certain aspects, SiC crystalline materials with reduced absorption coefficients for wavelengths of light within the visible spectrum are disclosed. Various peaks in absorption over a wavelength spectrum may be reduced in SiC crystalline materials to improve overall absorption coefficient uniformity across the visible spectrum. By providing such improvements in absorption coefficients for SiC crystalline materials, reduced reflection and transmission losses of light in corresponding devices may be realized. Related methods are disclosed that include various combinations of crystalline growth, with and without various post-growth thermal conditioning steps.

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Raleigh, NC, United States of America

David P Malta