Our technology uses GaN (gallium nitride)SiC (silicon carbide) wide band gap semiconductor materials to develop high radiation hardness semiconductor technologies for space applications. GaNSiC-based materials feature with a strong bondingsmall lattice constant. Furthermore, the displacement energy of GaNSiC-based materials is greater than 10 times that of silicon. Therefore, GaNSiC-based device can exhibit a better radiation hardness than the Si-based devices, indicating that GaNSiC-based electronics are promising for the space applications.