Ternary nitride semiconductors in the rocksalt crystal structure.

ABSTRACT: Inorganic nitrides with wurtzite crystal structures are well-known semiconductors used in optical and electronic devices. In contrast, rocksalt-structured nitrides are known for their superconducting and refractory properties. Breaking this dichotomy, here we report ternary nitride semiconductors with rocksalt crystal structures, remarkable electronic properties, and the general chemical formula Mg_x TM _1-xN (TM = Ti, Zr, Hf, Nb). Our experiments show that these materials form over a broad metal composition range, and that Mg-rich compositions are nondegenerate semiconductors with visible-range optical absorption onsets (1.8 to 2.1 eV) and up to 100 cm² V^-1⋅s^-1 electron mobility for MgZrN₂ grown on MgO substrate

SUBMITTER: Bauers SR 

PROVIDER: S-EPMC6660719 | biostudies-literature | 2019 Jul

REPOSITORIES: biostudies-literature