Interaction with 2D Systems

Since the first discovery of graphene, 2-dimensional materials have shown great promise in numerous applications, due to their particular electrical and optical properties. With the field of application ranging from sensing and photodetection up to energy conversion - to name just a few, gaining control over the physical properties of 2-dimensional materials has proven to be of great importance. In this project we investigate the effect of organophosphonate interfacial chemistry on the intrinsic doping behavior of monolayer MoS2 (ML-MoS2). For this purpose we fabricate heterostructures based on Si/SiO2 substrate, functionalized with organophosphonate self-assembled monolayers (SAMPs) and decorate them with ML-MoS2. Interfacial interaction of ML-MoS2 and different SAMPs results in a shift of the Raman-active out-of-plane mode A1g of MoS2, indicating the effect of functionalization on the electronic properties of the 2-dimensional material.

   

Raman spectra taken on 1L MoS2 deposited on SiO2 and on different organophosphonate SAMs

Selected Publications:

Csiki R., Parzinger E., Schwartz J., Stutzmann M., Wurstbauer U., Cattani-Scholz A. " Tuning the physical properties of MoS2 membranes through organophosphonate interfacial chemistry”, Nanotechnology IEEE-Nano, 2015, 1564-1567.

Collaborations:

Ursula Wurstbauer, Walter Schottky Institut and Physics Department, Technische Universität München, Germany

Jeffrey Schwartz, Department of Chemistry, Princeton University, USA

Open positions:

if you would like to join us as an internship or master student on this project, please contact Anna Cattani-Scholz

 


 

TUM Technische Universität München TUM Technische Universität München Physik Department Elektrotechnik und Informationstechnik TUM Technische Universität München
 

Events & News

17 Jan 2018

ERC Consolidator Grant for Gregor Koblmüller   more

16 Jan 2018

Light-steering of spin-polarized currents in topological insulators   more

10 Aug 2017

Best Poster Awards for Ganpath Veerabathran and Alexander Andrejew at iNOW 2017   more

27 Jun 2017

Best Poster Award at Nanowire Week for Jochen Bissinger   more

15 Mar 2017

Dr. Kai Müller admitted to the “Junges Kolleg” of the Bavarian Academy of Sciences   more

Seminars

March 12, 2018

Two-dimensional coherent spectroscopy of a semiconductor microcavity   more

March 05, 2018

Diamond-organic photovoltaics   more