Wiring quantum dots

01.10.2011 - 03.09.2014
Research funding project
Today, most modern technology relies mainly on materials with reduced dimensionalities, such as thin films (2D), nanowires (1D), and quantum dots (0D). An extreme success in synthesis, characterization, and application of the respective – but separated – material classes has been achieved within the past 30 years. In this research proposal we merge: (a) three young and important research groups out of Switzerland, Austria and Germany, as well as (b) two of the most important nanostructures for future applications: quantum dots and nanowires, which will result into nano-materials with superior functionality. The synthesis techniques will be based on the use of phase separation as a vehicle for creating inhomogeneities within particular nanowire materials. Three promising approaches will be investigated within our research: (i) synthesis of stoichiometrically unstable compounds during growth, (ii) subsequent ion implantation beyond solubility limits, and (iii) controlled phase conversion by diffusion. The resulting “wired quantum dots” will need a comprehensive structural characterization using e.g. electron microscopy, X-Ray diffraction and Raman scattering so that the optimum synthesis parameters can be identified. The main focus of this project is the investigation of the correlation between the structure and functionality of the wired quantum dots, in order to enable novel electronic and photonic devices. A long term goal of the project includes the realization of a proto-type light emitting diode device and an electrical memory transistor with high-performance properties.

People

Project leader

Project personnel

Institute

Grant funds

  • FWF - Österr. Wissenschaftsfonds (National) Austrian Science Fund (FWF)

Research focus

  • Special and Engineering Materials: 50%
  • Design and Engineering of Quantum Systems: 50%

Keywords

GermanEnglish
Nanodrähtenanowire
Implantationimplantation
Quantenpunktequantum dots
Fotolumineszenzphotoluminescence
Raman Spektroskopieraman spectroscopy

Publications