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Non-blinking single-photon generation with anisotropic colloidal nanocrystals: towards room-temperature, efficient,
Ferruccio Pisanello1, Godefroy Leménager, Luigi Martiradonna
1Istituto Italiano di Tecnologia (IIT), Center for Bio-Molecular Nanotechnologies, Arnesano (Lecce), Italy. ferruccio.pisanello@iit.it
Advanced Materials (Deerfield Beach, Fla.)
|January 22, 2013
Summary
Tailor blinking and single-photon emission in cadmium selenide/cadmium sulfide (CdSe/CdS) core/shell nanocrystals. Adjusting shell thickness and length optimizes non-blinking behavior and photon emission probability for advanced optical applications.
Area of Science:
- Materials Science
- Nanotechnology
- Quantum Optics
Background:
- Colloidal semiconductor nanocrystals, such as CdSe/CdS, are promising for quantum applications.
- Controlling photoluminescence intermittency (blinking) and single-photon emission is crucial for their use in quantum technologies.
Purpose of the Study:
- To investigate the influence of shell thickness and length on the optical properties of CdSe/CdS core/shell dot-in-rods.
- To achieve tailored blinking suppression and control single-photon emission probability.
Main Methods:
- Synthesis of CdSe/CdS core/shell colloidal dot-in-rods with varying shell dimensions.
- Photoluminescence spectroscopy to analyze blinking behavior and single-photon emission.
Main Results:
- Increasing shell thickness significantly reduces blinking, leading to nearly non-blinking nanocrystals.
- Modulating shell length provides a method to control the probability of single-photon emission.
Conclusions:
- CdSe/CdS core/shell dot-in-rods offer tunable optical properties.
- Precise control over shell dimensions enables optimization for applications requiring stable and efficient single-photon sources.
