Search for dissertations about: "qd"
Showing result 1 - 5 of 53 swedish dissertations containing the word qd.
-
1. Scanning Tunneling Microscopy Induced Luminescence Studies of Semiconductor Nanostructures
Abstract : This thesis treats scanning tunneling luminescence (STL) investigations of semiconductor nanostructures. The STL technique combines scanning tunneling microscopy (STM) with detection of photons, induced by the tunneling electrons. The high spatial resolution in STM and the local excitation allow for optical investigations on the nanometer-scale. READ MORE
-
2. Non-Orthogonality and Electron Correlations in Nanotransport : Spin- and Time-Dependent Currents
Abstract : The concept of the transfer Hamiltonian formalism has been reconsidered and generalized to include the non-orthogonality between the electron states in an interacting region, e.g. quantum dot (QD), and the states in the conduction bands in the attached contacts. READ MORE
-
3. Fluorescence Properties of Quantum Dots and Their Utilization in Bioimaging
Abstract : Quantum dots (QDs), especially colloidal semiconductor QDs, possess properties including high quantum yields, narrow fluorescence spectra, broad absorption and excellent photostability, making them extremely powerful in bioimaging. In this thesis, we studied the fluorescence properties of QDs and attempted multiple ways to boost applications of QDs in bioimaging field. READ MORE
-
4. Study of quantum dots on solar energy applications
Abstract : This thesis studies p-i-n GaAs solar cells with self-assembled InAs quantum dots (QDs) inserted. The values of this work lie in three aspects. READ MORE
-
5. Optical Studies of Single Quantum Dots
Abstract : This thesis presents spectroscopic studies of single self-assembled InP quantum dots (QDs). The electronic properties of these QDs have been studied by photoluminescence (PL) and scanning tunnelling luminescence (STL). The QDs were grown in the Stranski-Krastanow mode and were embedded in GaInP. READ MORE