Semiconductor Nanostructures

Semiconductor Nanostructures

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Reducing the size of a coherently grown semiconductor cluster in all three directions of space to a value below the de Broglie wavelength of a charge carrier leads to complete quantization of the energy levels, density of states, etc. Such a€œquantum dotsa€ are more similar to giant atoms in a dielectric cage than to classical solids or semiconductors showing a dispersion of energy as a function of wavevector. Their electronic and optical properties depend strongly on their size and shape, i.e. on their geometry. By designing the geometry by controlling the growth of QDs, absolutely novel possibilities for material design leading to novel devices are opened. This multiauthor book written by world-wide recognized leaders of their particular fields and edited by the recipient of the Max-Born Award and Medal 2006 Professor Dieter Bimberg reports on the state of the art of the growing of quantum dots, the theory of self-organised growth, the theory of electronic and excitonic states, optical properties and transport in a variety of materials. It covers the subject from the early work beginning of the 1990s up to 2006. The topics addressed in the book are the focus of research in all leading semiconductor and optoelectronic device laboratories of the world.We use spectrally broad femtosecond laser pulses which are centered around the excitonic QW absorption resonance and coupled into a near- field fiber probe to ... (a) Schematic illustration of the experimental setup and of near-field PL and reflectivity spectra of a QD sample. ... PL and R are recorded with identical pump pulses centered at 1.675eV, exciting electrona€“hole pairs in 2D continuum states.


Title:Semiconductor Nanostructures
Author: Dieter Bimberg
Publisher:Springer Science & Business Media - 2008-06-03
ISBN-13:

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