• Schütte, Marc
• Waldecker, Lutz
• Beschoten, Bernd
• Tebbe, David

Abstract

<jats:title>Abstract</jats:title><jats:p>Optical micro-spectroscopy is an invaluable tool for studying and characterizing samples ranging from classical semiconductors to low-dimensional materials and heterostructures. To date, most implementations are based on point-scanning techniques, which are flexible and reliable, but slow. Here, we describe a setup for highly parallel acquisition of hyperspectral reflection and photoluminescence (PL) microscope images using a push-broom technique. Spatial as well as spectral distortions are characterized and their digital corrections are presented. We demonstrate close- to diffraction-limited spatial imaging performance and a spectral resolution limited by the spectrograph. The capabilities of the setup are demonstrated by recording a hyperspectral PL map of a MoSe<jats:sub>2</jats:sub>–WSe<jats:sub>2</jats:sub> lateral heterostructure, grown by chemical vapor deposition (CVD), from which we extract the luminescence energies, intensities and peak widths across the interface.</jats:p>

Topics

• impedance spectroscopy
• photoluminescence
• semiconductor
• chemical vapor deposition
• microscopy