Accueil > Production Scientifique > Thèses soutenues > Année 2020 > Soutenance de thèse de Wei Zhang (6 juillet 2020)
Soutenance de thèse de Wei Zhang (6 juillet 2020)
par - 16 juin 2020 (modifié le 1er juillet 2020)
Une trentaine de personnes pourront assister à la thèse dans l’amphithéâtre de l’ISMO : RESERVATION OBLIGATOIRE
Envoyer un mail à
Hamid OUGHADDOU <Hamid.oughaddou@universite-paris-saclay.fr>
et Andrew Mayne <andrew.mayne@universite-paris-saclay.fr>
Il sera également possible d’assister à la thèse en visio conférence
Lien : https://eu.bbcollab.com/guest/23053ea0a289455eb1acab9c68a710c6
Un pot sera organisé à l’issue de la thèse sur le parvis de l’ISMO dans le respect des gestes barrières.
Growth of phosphorene
Over the last decade, the research in 2D materials has grown appreciably, due to their new hitherto unknown properties as well as their great promise for application in next generation electronic and optoelectronic devices. In particularly, phosphorene has attracted intensive interest recently because it has several properties that distinguish it from other 2D materials, including an intrinsic direct band gap, that can be tuned from 1.8 eV for a monolayer to 0.35 eV for bulk black phosphorus crystals, and high carrier mobility with high on/off ratio. All these attributes make it suitable for nano-scale devices.
In this thesis, we present an experimental investigation of the epitaxial growth of phosphorus on Au(111) and Ag(111) substrates. The experiments were performed using the following ultra-high vacuum surface science techniques : scanning tunneling microscopy and spectroscopy (STM-STS), low energy electron diffraction (LEED), Auger electron spectroscopy (AES), x-ray photoelectron spectroscopy (XPS) and angle resolved photoemission spectroscopy (ARPES).