Two-dimensional nanostructures: Synthesis and optoelectronic transport
In my talk I will briefly review the fields of my research and then, I will show that two-dimensional colloidal nanosheets represent very attractive optoelectronic materials. They combine good lateral conductivity with solution-processability and geometry-tunable electronic properties. The formation of ordered and densely packed surface layers of amphiphilic ligand molecules on certain crystal facets can drive the normally isotropic into a two-dimensional crystal growth, resulting in semiconducting nanosheets. The electronic confinement in height allows tuning the effective bandgap of the materials.
I will present the syntheses of the materials and the analyses of the electrical transport through these materials in field-effect transistors, solar cells, and spintronic devices. It turns out that the electronic confinement allows for an optimization of their performances.
Pr. Christian KLINKE
Institute of Physical Chemistry, University of Hamburg, Germany
& Chemistry Department, Swansea University, United Kingdom