Nanodots and Quantum Dots
A quantum dot is a single crystal of semiconducting material, measuring only a few nanometers in diameter. With enhanced electrical and optical properties, quantum dots are the cutting-edge of nanotechnology.
Features and Applications
- When excited, these materials confine electrons and holes. The smaller the dot, the greater the confinement energy, leading to higher energy absorption and emission. This means more efficient photon management for your applications.
- Our selection of quantum dots guarantees high purity with properties including, chemical inertness, high tolerance, or low toxicity.
- Quantum dots find use in a wide range of applications. With good biocompatibility, they are ideal for drug delivery and bioimaging; or with excellent photoluminescent quantum yields, they have huge potentials in solar cells and LED displays.
Browse Nanodots and Quantum Dots
Related categories: low dimensional materials, carbon nanotubes, 2D materials
Resources and Support
Synthesis of Perovskite Quantum Dots
Synthesising high quality quantum dots (QDs) can be a complex process. Two major routes to the synthesis have now been developed: room temperate synthesis and synthesis by hot injection.
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Perovskite Quantum Dots: A Rapidly Expanding Area of Research
Over the last two decades, quantum dots have elicited a considerable amount of excitement and attention from both research scientists and the media. When Sony launched their XBR line of televisions in 2013, quantum dots successfully moved from pure research into the commercial sphere. Despite this, there are still some barriers to overcome before we can expect to see widespread adoption of quantum dot-based products.
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What is molecular engineering?
Molecular engineering is simply the design and synthesis of molecules with specific properties and functions in mind. Certain chemical groups and atoms incorporated into molecules results in them having certain characteristics.
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What is molecular electronics?
Molecular electronics or "moletronics" is to use molecules as building blocks to create electronic components. These molecular electronic components include transistors, diodes, capacitors, insulators, and wires.
Read more...More on Quantum Dots
The most studied quantum dots are metal chalcogenide dots. These are based on semiconductors such as cadmium selenide, indium phosphide or lead(II) sulfide. The bandgap of such quantum dots can be tuned throughout the entire visible spectrum simply by changing their size during chemical synthesis.
For the highest photoluminescence quantum yields (PLQY), a shell structure is usually required. In this arrangement, a second semiconductor encapsulates the nanocrystal. This material passivates surface defects of the emissive core which would otherwise act as non-radiative recombination sites for excitons.
Due to their high PLQY, relative ease of fabrication and wide emission-colour tunability, quantum dots having this type of structure are especially suitable for display and imaging technologies. Already, you can find them in commercial products such as televisions.