Abstract
One-dimensional nanostructures (quantum wires) and zero-dimensional ones (quantum dots) are discussed with regard to their various fabrication methods and the tunable physical properties in such systems. Main effects covered are the modified density of states, confined energy levels, (envelope) wavefunction symmetry and the resulting novel electrical and optical properties.
The principles of physics, as far as I can see, do not speak against the possibility of maneuvering things atom by atom.
R.P. Feynman, 1959 [1132]
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Notes
- 1.
The LDA in [1155] yields \(E_{\mathrm {g}}=0.63\) eV for the bulk ZnO band gap; its experimental value is 3.4 eV.
- 2.
The ordering in size is remarkable. Typically Ostwald ripening (due to the Gibbs–Thomson effect; smaller droplets have larger vapor pressure and dissolve, larger droplets accordingly grow) occurs in an ensemble of droplets or nuclei. In the case of strained QDs, surface energy terms stabilize a certain QD size.
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Grundmann, M. (2016). Nanostructures. In: The Physics of Semiconductors. Graduate Texts in Physics. Springer, Cham. https://doi.org/10.1007/978-3-319-23880-7_14
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DOI: https://doi.org/10.1007/978-3-319-23880-7_14
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