Dr. rer. nat. Günther Reithmaier
Lehrveranstaltungen und Termine
|Titel und Modulzuordnung|
Physics of semiconductors and their nanostructures
Zuordnung zu Modulen:
Mitwirkende: Reithmaier, G.
sowie Termine in Gruppen
Ausgeschriebene Angebote für Abschlussarbeiten
- Transient Rayleigh Scattering of single SixGe1-x Nanowires
Direct bandgap silicon has been the holy grail of the semiconductor industry for many years, since it would allow integrating both electronic and optical functionalities on a silicon platform. Recent theoretical calculations1 predict that hexagonal crystal phase SixGe1-x features a tunable direct bandgap from 1380 - 1800 nm, exactly coinciding with the low loss window for optical fibre communications. A generic approach to grow hexagonal SixGe1-x nanowires with a tunable composition x has been developed by our cooperation partner2.
As a master student of this project you will take part in an interdisciplinary research effort intended to demonstrate efficient light emission from direct bandgap SixGe1-x, followed by the development of a SixGe1-x nanolaser. Possible applications of such nanoscale light sources include silicon-based on-chip optical interconnects and a silicon-compatible quantum light source.
The main focus of the thesis will be optical measurements conducted with a low- temperature photoluminescence setup for single and ensemble nanowires. After an initial sample pre-characterization phase, we will develop a Transient Rayleigh Scattering setup, as depicted schematically in figure c). This pump- probe experiment will be utilized for the ultrafast characterization of charge carrier dynamics in nanowire lasers.
If you are interested, please contact firstname.lastname@example.org
- geeignet als
- Masterarbeit Physik der kondensierten Materie
- Themensteller(in): Jonathan Finley