Correlative analysis on InGaN/GaN nanowires: structural and optical properties of self-assembled short-period superlattices.

ABSTRACT: The influence of self-assembled short-period superlattices (SPSLs) on the structural and optical properties of InGaN/GaN nanowires (NWs) grown by PAMBE on Si (111) was investigated by STEM, EDXS, µ-PL analysis and k·p simulations. STEM analysis on single NWs indicates that in most of the studied nanostructures, SPSLs self-assemble during growth. The SPSLs display short-range ordering of In-rich and In-poor In_xGa_1-xN regions with a period of 2-3 nm that are covered by a GaN shell and that transition to a more homogenous In_xGa_1-xN core. Polarization- and temperature-resolved PL analysis performed on the same NWs shows that they exhibit a strong parallel polarized red-yellow emission and a predominantly perpendicular polarized blue emission, which a

SUBMITTER: Alonso-Orts M 

PROVIDER: S-EPMC9978047 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature