UPS and UV spectroscopies combined to position the energy levels of TiO2 anatase and rutile nanopowdersElectronic supplementary information (ESI) available: XRD patterns of TiO2 powders. Methodology of UPS calibration, background subtraction and absolute UPS measurement. UPS spectra of conducting substrates and the different TiO2 layers (rutile and anatase with various preparation methods). UV-Vis diffuse reflectance spectra. See DOI: 10.1039/c8cp04614j

• Main Authors: Maheu, Clément, Cardenas, Luis, Puzenat, Eric, Afanasiev, Pavel, Geantet, Christophe
• Format: Journal Article
• Published: 17.10.2018

An accurate experimental determination of electronic structures in semi-conductor nanopowders is a challenging task. We propose here to combine UPS and UV-Vis spectroscopies in order to get the full description of the electronic band alignment of powder samples, TiO 2 rutile and anatase. For UPS mea...