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

• DOI: 10.1021/acs.nanolett.0c03584
• Publication Date: 2020-11-25T15:59:58Z
• Authors: Enrico Di Russo; Pradip Dalapati; Jonathan Houard; Linda Venturi; Ivan Blum; Simona Moldovan; Nolwenn Le Biavan; Denis Lefebvre; Maxime Hugues; Jean Michel Chauveau; Didier Christian ...; Bernard Deconihout; Angela Vella; François Vurpillot; Lorenzo Rigutti
• Keywords: 02 engineering and technology; 540; Optical Spectroscopy; 530; Atomic Scale Microscopy; Semiconductors; Super-resolution; [SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic; Heterostructures; [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det]; Quantum Light Emitters; [PHYS.COND]Physics [physics]/Condensed Matter [cond-mat]; 0210 nano-technology

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.