GaN Nanowhiskers:structural, electrical and optical characterization

The project concerns the study carried out in GaN nanocolumns by means of different characterization techniques. The growth has been carried out at the Forschungszentrum J\ufclich \u2013 ISG1 by PAMBE (Plasma Assisted Molecular Beam Epitaxy). Structural and electrical characterization of the nanowhiskers have been performed by PL (photoluminescence), CL (cathodoluminescence), Raman Spectroscopy, dark and UV conductivity and Spectral Photoconductivity. The inhomogenous distribution of specific defects was found along the nanocolums and the effect of size in electrical and optical behaviour is deeply investigated