Photoemission Spectroscopy: New Developments

New developments in planar array infrared spectroscopy.

A planar array infrared (PA-IR) spectrograph offers several advantages over other infrared approaches, including high acquisition rate and sensitivity. However, it suffers from some important drawbacks, such as a limited spectral range and a significant curvature of the recorded spectral images, which still need to be addressed. In this article, we present new developments in PA-IR spectroscopy...

Inverse Photoemission Spectroscopy of Multiwall Carbon Nanotubes

Multiwall Carbon Nanotubes (MWCNTs) were synthesized by Chemical Vapor Deposition (CVD). Two different procedures were used to grow MWCNT films roughly, aligned in the direction normal to the SiO2/Si(111) substrate. Inverse Photoemission Spectroscopy measurements, on these samples, show the existence of resonances which could be traced back to a flat graphene sheet. The unoccupied valence band ...

Spin-polarized photoemission CY653 Electron Spectroscopy

Photoemission spectroscopy with fs-VUV radiation

Recently, lateral resolution of photoemission spectroscopy has been rapidly improving by several types of energy-filtered electron emission microscopes (PEEM) or by focused light sources.1–6) On the other hand, laser-based photoemission spectroscopy facilitates femtosecond time-resolution, revealing the dynamics of electrons and atoms on surfaces.7–11) The combination of lateral and temporal re...

Photoemission spectroscopy investigation of magnesium–Alq3 interfaces

The formation of interfaces between magnesium ~Mg! and the organic molecular semiconductor tris~8-hydroxy-quinoline! aluminum (Alq3) is studied via ultraviolet photoemission spectroscopy. The morphology and electronic structure of Mg-on-Alq3 and Alq3-on-Mg interfaces are compared. The energy of the Alq3 molecular levels is determined in both cases with respect to a reference Fermi level as a fu...