NEXTDOT · Next generation quantum dot materials and devices
FP6 — Marie Curie Actions (Human Resources and Mobility)
- Duration
- 2007-06-01 → 2009-05-31
- EU contribution
- €212,681
- Participants
- 1
- Scheme
- EIF
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Results in brief
Final Activity Report Summary - NEXTDOT (Next generation quantum dot materials and devices)
The project provided a detailed analysis of the optical properties novel semiconductor nano-structure materials and devices including III-V and group IV materials. In this first part of the project, we analysed the emission from type II GaSb/GaAs quantum dots. In this material the holes are captured into the dots while the electrons remains confined outside the dots. This charge separation leads to strong Coulomb effects that were analysed using both time-resolved and photo-reflectance spectroscopy and modelling using the k.p approximation. In the second part of the project, we analysed properties of other semiconductor nanostructure materials based on group IV materials including the measurement of the carrier bandwidth of Si/Ge superlattice modulators and the emission from strained Ge quantum wells incorporated in III-V materials.
Data: CORDIS, © European Union
Project objective
The proposal will lead to significant advances in the general area of QD research. Improving the understanding of current QD materials and devices is crucial towards enabling this technology to reach its full potential. This understanding will emerge from the extensive experimental program foreseen, which includes detailed gain and refractive index measurements as a function of temperature from 77K to above room temperature, femto-second pump probe spectroscopy to determine the fundamental timescales of the se novel structures and careful analysis of the efficiency and transport properties of these devices to reveal their fundamental transport and loss processes.This information will greatly aid the development of new quantum dot material structures such as those based on Antimonide substrates and dot-in-a-dot structures. These materials will be the first of their kind in the world and the researchers role will be key in providing feedback to both fabricators and designers. Through this interaction, great progress will be made in the practical realisation of the great benefits of quantum dot materials and their extension to new wavelength ranges.
Original text from CORDIS.
Participants
- UNIVERSITY COLLEGE CORK · CORKCoordinatorIreland
Links
Data: CORDIS, © European Union