Super-resolution Optical Spectroscopy of Nanoscale Emitters within a Photonic Atom Probe

• Published in: Nano letters Vol. 20; no. 12; pp. 8733 - 8738
• Main Authors: Di Russo, Enrico, Dalapati, Pradip, Houard, Jonathan, Venturi, Linda, Blum, Ivan, Moldovan, Simona, Le Biavan, Nolwenn, Lefebvre, Denis, Hugues, Maxime, Chauveau, Jean Michel, Blavette, Didier Christian, Deconihout, Bernard, Vella, Angela, Vurpillot, François, Rigutti, Lorenzo
• Format: Journal Article
• Language: English
• Published: American Chemical Society 09-12-2020
• Subjects: Condensed Matter; Engineering Sciences; Instrumentation and Detectors; Optics; Photonic; Physics; Optical Spectroscopy; Super-resolution; Atomic Scale Microscopy; Semiconductors; Quantum Light Emitters; Heterostructures
• ISSN: 1530-6984; 1530-6992
• DOI: 10.1021/acs.nanolett.0c03584

Atom Probe Tomography (APT) is a microscopy technique allowing for the 3D reconstruction of the chemical composition of a nanoscale needle-shaped sample with a precision close to the atomic scale. The photonic atom probe (PAP) is an evolution of APT featuring in situ and operando detection of the photoluminescence signal. The optical signatures of the light-emitting centers can be correlated with the structural and chemical information obtained by the analysis of the evaporated ions. It becomes thus possible to discriminate and interpret the spectral signatures of different light emitters as close as 20 nm, well beyond the resolution limit set by the exciting laser wavelength. This technique opens up new perspectives for the study of the physics of low dimensional systems, defects and optoelectronic devices.