Observation of 2D-magnesium-intercalated gallium nitride superlattices.

ABSTRACT: Since the demonstration of p-type gallium nitride (GaN) through doping with substitutional magnesium (Mg) atoms^1,2, rapid and comprehensive developments, such as blue light-emitting diodes, have considerably shaped our modern lives and contributed to a more carbon-neutral society^3-5. However, the details of the interplay between GaN and Mg have remained largely unknown^6-11. Here we observe that Mg-intercalated GaN superlattices can form spontaneously by annealing a metallic Mg film on GaN at atmospheric pressure. To our knowledge, this marks the first instance of a two-dimensional metal intercalated into a bulk semiconductor, with each Mg monolayer being intricately inserted between several monolayers of hexagonal GaN. Characterized as an interstitial inter

SUBMITTER: Wang J 

PROVIDER: S-EPMC11222157 | biostudies-literature | 2024 Jul

REPOSITORIES: biostudies-literature