Abstract
Two different fabrication techniques to obtain nanometer scale structures without the use of lithography are demonstrated. Quantum dots are made on GaAs by growing strained InP islands by metal-organic vapour phase epitaxy. Quantum confinement of carriers is achieved by the growth of quantum wells on the InP islands. Molecular beam epitaxy is used for the fabrication of a gold island mask on GaAs. Reactive ion etching through the gold mask produces a high density of GaAs columns with diameters down to 20 nm.
Original language | English |
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Pages (from-to) | 241-243 |
Number of pages | 3 |
Journal | Physica Scripta |
Volume | 1994 |
Issue number | T54 |
DOIs | |
Publication status | Published - 1994 |
MoE publication type | A1 Journal article-refereed |