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Titel
Deterministic Fabrication of Inverted Nanocones around GaAs Quantum Dots / submitted by Christoph Kohlberger
AutorInnenKohlberger, Christoph
Beurteiler / BeurteilerinRastelli, Armando
ErschienenLinz, 2018
UmfangIV, 67 Seiten : Illustrationen
HochschulschriftUniversität Linz, Masterarbeit, 2018
SpracheEnglisch
DokumenttypMasterarbeit
Schlagwörter (DE)Quantenpunkte / Gallium Arsenid / deterministisch / Nanostrukturen / LED
Schlagwörter (EN)Quantum dots / Gallium arsenide / deterministic / nanocones / LED
Schlagwörter (GND)Quantenpunkt / Galliumarsenid / Deterministischer Prozess / Fertigung / Nanostruktur / Lumineszenzdiode
URNurn:nbn:at:at-ubl:1-23085 Persistent Identifier (URN)
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Deterministic Fabrication of Inverted Nanocones around GaAs Quantum Dots [9.33 mb]
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Zusammenfassung (Englisch)

To enhance the performance of quantum dots, used as future quantum emitters in quantum comput- ing or quantum cryptography, the creation of nano-structures became indispensable. Furthermore, many quantum dot fabrication techniques, leading to photons with outstanding optical quality, occur without position control. This requires the deterministic positioning of the photonic structure around preselected quantum emitters. In this thesis, an approach to perform quantum dot position mapping and a subsequent creation of inverted nano-cones was worked out. Thereby, a photoluminescence setup, operating with light emitting diodes, was built up, an image processing script was created, and existing nano-structure processing steps were modied in order to enhance processing reproducibility. In the end, the fabricated structures were examined through photoluminescence measurements. As a result, some structures exhibited remarkable intensity enhancement, whereby positioning as well as fabrication techniques were still improvable.

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