2D Electronic Materials

In 2DEM we explore the unique properties of low-dimensional materials and how these can be engineered towards novel types of devices and technology, mainly within electronic and optoelectronic application areas. 

Our research is oriented around two research topics.

Fundamental properties of 2D materials and novel device architectures

Here we explore the exciting wealth of physics made possible by the extreme tunability and a unique form factor of 2D materials, and how this can be turned into devices.

Recent examples are ferroelectric molecular devices where water molecules are used as non-volatile switches [1], edge-engineered nanoconstrictions that create profound changes in the charge distribution and quantum transport [2] and the world’s first lithographic bandgap engineering of graphene with nanopatterning on the 10 nm scale [3]. 

We are also working on novel architectures based on electron focusing[4], and are very interested in twisted layers, correlated electronic phases and how nanopatterning can be used to modify and utilize the new electronic phases of 2D materials. 

Large scale 2D material characterisation and integration

We work on removing major roadblocks for graphene electronics, such as large scale growth [5], integration (encapsulation) and characterisation and patterning, in collaboration with the Applied 2D Materials group.

We develop large-scale heterostructures where the properties of pristine 2D materials are protected against doping, scattering and outside influences, using scalable methods inspired by our hot-pickup vdW assembly method[6].

We have since 2012 collaborated with DTU Fotonik on establishing large-scale THz-TDS mapping technique for graphene[7] that offers fast and accurate quality control, mobility and carried density mapping, as well as deeper insights into the carrier dynamics and microstructure, and is set to become a new industrial metrology standard.

We are also interested in graphene and other 2D materials as chemical barriers, membranes and coatings. 

In 2DEM we explore the unique properties of low-dimensional materials and how these can be engineered towards novel types of devices and technology, mainly within electronic and optoelectronic application areas.

1. Caridad Nano Letters 18 8 4675 (2018)
2. Caridad Nature Comms 9 659 (2018)
3. Jessen Nature Nanotechnology 14 340 (2019)
4. Bøggild Nature Comms 8 15783 (2017)
5. Shivayogimath Nature Comms  10 1 (2019) (see Applied 2D Materials)
6. Pizzocchero Nature Comms 7 11894 (2016)
7. Bøggild 2D Materials 4 4 042003 (2017)

Facilities and international collaborations

The 2DEM group works closely together with the Applied 2D materials group and the Terahertz group at DTU Fotonik, and is involved in the Centre of Excellence CNG (Center for Nanostructured Graphene) as well as the Graphene Flagship (Electronics, Integration and Production workpackages).

We rely heavily on the DTU Nanolab facility, one of the largest and best equipped academic cleanrooms in Europe, and have lab facilities for structural, optical and electronic characterisation. We collaborate with great research teams all across the globe, including University of Cambridge (UK), ICFO (ES), University of Texas (US), UNIST (SK) and Columbia University (US).

 

Contact

Peter Bøggild
Professor
DTU Physics
+45 21 36 27 98