Invited Paper AP+AS+MC+MI+NS-MoM10
Correlating Atom Probe Tomography with High-Resolution Scanning Transmission Electron Microscopy and Micro-Photoluminescence Spectroscopy: The Case of III-Nitride Heterostructures
Monday, October 19, 2015, 11:20 am, Room 230A
Correlating two or more microscopy techniques on the same nanoscale object may yield a relevant amount of information, which could not be achieved by other means. In this contribution, we present several results of correlated studies of micro-photoluminescence (μ-PL), high-resolution scanning transmission electron microscopy (HR-STEM) and laser-assisted atom probe tomography (APT) on single nano-objects containing AlGaInN quantum well and quantum dot systems. We will show how this approach can be applied to the study of heterostructure interface definition, presence of defects, carrier localization and optical emission in III-N quantum confined systems [1]. Furthermore, we will show how the use of complementary techniques may be extremely helpful for a correct interpretation of atom probe results [2]. The possible implementation of micro-photoluminescence as an in-situ technique within the atom probe itself will finally be discussed [3].
[1] L. Rigutti et al., Nano letters (2014), 14, 107–114.
[2] L. Mancini et al. J. Phys. Chem. C (2014) 118, 24136-24151.
[3] L. Rigutti et al., Ultramicroscopy (2013), 132, 75-80.