A photonic atom probe coupling 3D atomic scale analysis with in situ photoluminescence spectroscopy
- 1 August 2020
- journal article
- research article
- Published by AIP Publishing in Review of Scientific Instruments
- Vol. 91 (8), 083704
- https://doi.org/10.1063/5.0012359
Abstract
Laser enhanced field evaporation of surface atoms in laser-assisted Atom Probe Tomography (APT) can simultaneously excite photoluminescence in semiconductor or insulating specimens. An atom probe equipped with appropriate focalization and collection optics has been coupled with an in situ micro-photoluminescence (μPL) bench that can be operated during APT analysis. The photonic atom probe instrument we have developed operates at frequencies up to 500 kHz and is controlled by 150 fs laser pulses tunable in energy in a large spectral range (spanning from deep UV to near IR). Micro-PL spectroscopy is performed using a 320 mm focal length spectrometer equipped with a CCD camera for time-integrated and with a streak camera for time-resolved acquisitions. An example of application of this instrument on a multi-quantum well oxide heterostructure sample illustrates the potential of this new generation of tomographic atom probes.Keywords
Funding Information
- Région Normandie/ERDF (RIN IFROST, CPER BRIDGE)
- Institut Carnot ESP (NanoT-AP)
- Agence Nationale de la Recherche (ANR-13-JS10-0001-01 TAPOTER, EMC3 Labex AQURATE, EMC3 Labex IDEPOP, EMC3 Labex ASAP)
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