Frontiers of Nanotechnology: Semiconductor Nanowires
Event details
| Date | 01.07.2010 |
| Hour | 14:00 |
| Speaker | Dr. Silvija Gradecak |
| Location |
PH L1 503 (Aquarium)
|
| Category | Conferences - Seminars |
Nanostructured materials – including nanowires, nanotubes, and nanocrystals – have unique and
size-tunable properties that depend on the precise arrangement of their atomic constituents. These
nanomaterials offer solutions to some of the current challenges in science and engineering, and
could potentially lead to improved understanding of the physical world and to discoveries of new
phenomena. However, functionality of novel nanomaterials and their impact on society will be
ultimately dictated by our understanding and ability to precisely control their structural properties,
size uniformity, and dopant distribution at the atomic level.
In this talk, I will discuss the growth, doping, and applications of III-V nanowires and nanowire
heterostructures using metalorganic chemical vapor deposition, as well as advanced electron
microscopy techniques for direct correlation of structural and physical properties with high spatial
resolution. We have demonstrated that the cathodoluminescence (CL) technique, coupled with
scanning transmission electron microscopy (STEM), effectively bypasses the resolution limit of
conventional far-field photoluminescence spectroscopy and allows direct structure-property
correlation on the nanoscale. The CL-STEM optical studies of single nanowire heterostructures with
spatial resolution of <20 nm will be discussed. Finally, applications of semiconductor nanowires for
LED and solar cell applications will be described.
Practical information
- General public
- Free
Contact
- Laszlo Forro