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Reliable & High-Quality Quantum Dots

MK Nano provides quantum dots that are trustworthy and of high quality by using controlled synthesis and extensive quality checks. We provide quantum dots with constant purity, a narrow size range, and the ability to reproduce batches. You can use them for bench-scale research or large-scale production. Quantum dots come as dry powders, concentrated dispersions, colloidal solutions, and custom packaging for research or industrial quantities.

Contact us to find the suitable quantum dots for your needs.

What Are Quantum Dots?

Quantum dots are tiny semiconductor crystals (usually 2–10 nm) whose electrical and optical characteristics are controlled by quantum confinement. They act like "tunable" atoms, which means their size, composition, and surface chemistry affect how they absorb and emit light.

  • Fluorescence that depends on size and brightness: smaller dots give off bluer light, while bigger dots give off redder light.
  • They are great for imaging, displays, and sensors because they have very stable and narrow emission peaks.
  • When you acquire quantum dots from a trusted supplier like MK Nano, they are easy to functionalize so that they work with solvents, polymers, or biological systems.

Quantum Dot Properties

  • Size-dependent emission (2–10 nm typical diameter) provides exact control over color.
  • High quantum yield and a small full width at half maximum (FWHM).
  • Strong absorption with a bandgap that can be changed by size and excitonic properties.
  • Good colloidal stability in certain solvents; surface ligands control solubility.

When you buy quantum dots, make sure to choose the right composition for your device's needs. They have electronic properties that are useful for photovoltaics, LEDs, and photodetectors.

Quantum Dots: Product Details

  • Parameter: Typical Options / Specification
  • Diameter: 2 nm - 10 nm (tunable)
  • Morphology: Spherical nanocrystals (monodisperse)
  • Emission Wavelength Range: UV–Near IR (depending on material & size)
  • Color: Blue-Green-Yellow-Red-NIR (size/composition dependent)
  • Solvent: Aqueous dispersions, toluene, hexane, dimethylformamide (custom)
  • Purity: >99% (trace metal and ligand specifications available on request)

(We can supply spec sheets for customers who buy quantum dots in research or production quantities.)

Quantum Dot Applications

  • Biomedical imaging and fluorescent labeling, such as flow cytometry and in vivo imaging.
  • Display technology and quantum dot LEDs (QD-LEDs) for panels that can show a broad range of colors.
  • Solar cells and photodetectors, better at harvesting light and absorbing.
  • Sensors, catalysis, and optoelectronic devices, where a narrow emission is very important.
  • Research and development in materials science, electronics, and new composites.

Explore options to buy quantum dots for your lab or factory.

Find out how Quantum Dot technology can revolutionize your applications. Contact us today to find out how to get quantum dots that are just right for you.

Frequently Asked Questions About Quantum Dots

Q: What are the challenges of quantum dots?

A: Making the surface stable, exchanging ligands to make devices operate, and making them biologically safe are the primary challenges. Correct formulation helps prevent these issues while acquiring quantum dots.

Q: What are the limitations of quantum dots?

A: Heavy-metal QDs (cadmium, lead) can be bad for the environment and health, and certain methods of manufacture are hard to integrate.

Q: What is the size of a quantum dot?

A: The average diameter is between 2 and 10 nm, and the optical properties fluctuate a lot in this range.

Q: What material are quantum dots made of?

A: Some common compositions include CdSe, CdTe, PbS, InP, perovskite QDs, and carbon/graphene QDs. Material choice depends on the needed emission and application.

Q: How to measure quantum dot size?

A: Transmission electron microscopy (TEM), dynamic light scattering (DLS), and optical spectroscopy (absorption/emission) are all common methods.

Q: In which field are quantum dots commonly used?

A: They are utilized a lot in biotechnology, displays (TVs and monitors), photovoltaics, sensors, and academic research.

Experts at MK Nano can help you select the ideal quantum dots for your specific needs.


  • PbS  in Toluene Emission: 900 nm

    PbS in Toluene Emission: 900 nm

    Lead Sulfide (PbS) core quantum dots with Oleic acid in Toluene (also available in Hexane, Chloroform and other select solvents) PL FWHM: 150(+/-)50nm UV-Vis FWHM: 150nm Quantum Yield: +40% Concentration: 10mg/mL Emission: 900 nm (+/- 50 nm) PbS...
  • CdTe Emission: 510 nm

    CdTe Emission: 510 nm

    Cadmium Telluride (CdTe) Quantum Dots, dry powder (dispersible in water) The QDs are enriched in Cd. The brutto formula can be expressed by Cd2-3Te1 The surface of CdTe is coated with mercaptosuccinic acid (MSA) (≤650nm); mercaptopropionic acid (MPA)...
  • CdSe/ZnS in Powder Emission: 530 nm CdSe/ZnS in Powder Emission: 530 nm

    CdSe/ZnS in Powder Emission: 530 nm

    CdSe/ZnS core/shell Quantum Dots in powder form Highly luminescent semiconductor nanocrystals coated with trioctylphosphine oxide. Readily soluble in toluene, chloroform, tetrahydrofuran, pyridine etc. Not soluble in water, alcohols, ethers. ZnS shell...
  • CdSe/ZnS in water Emission: 450 nm

    CdSe/ZnS in water Emission: 450 nm

    CdSe/ZnS Quantum Dots with Carboxylic Acid Ligand in Water PL FWHM (nm) 20-30 Quantum Yield >50%UV Peak: 440 (+/-10) nm Emission Peak: 450 (+/-10) nm FWHM (nm): 20-22 Core Dia (nm): 2-2.5; Shell Thickness (nm): 5-6 Total Dia (nm): 7-8 Product #...
  • CdSe in Toluene ABS: 460 nm Emm: 460-480 nm

    CdSe in Toluene ABS: 460 nm Emm: 460-480 nm

    Cadmium Selenide (CdSe) core Quantum Dots with Octadecyl amine (ODA) ligands in Toluene (also available in Hexane, Chloroform and other select solvents) PL FWHM (nm): 23-28 UV-Vis FWHM (nm): 22-26 Quantum Yield: >30% UV Peak (+/- 10 nm): 460...
  • CdS in Toluene Abs: 360 nm Emm: 365-390 nm

    CdS in Toluene Abs: 360 nm Emm: 365-390 nm

    Cadmium Sulfide Quantum Dots stabilized by Oleic acid in Toluene (also available in Hexane, Chloroform and other select solvents) PL fwhm: 16~24 nm UV-Vis hwhm: 26-34 nm Quantum Yield >20%  UV Peak (+/- 10 nm): 360 nm Crystal size: 2.3...
  • PbS  in Toluene Emission: 1000 nm

    PbS in Toluene Emission: 1000 nm

    Lead Sulfide (PbS) core quantum dots with Oleic acid in Toluene (also available in Hexane, Chloroform and other select solvents) PL FWHM: 150(+/-)50nm UV-Vis FWHM: 150nm Quantum Yield: +40% Concentration: 10mg/mL Emission: 1000 nm (+/- 50 nm) PbS...
  • CdTe Emission: 520 nm

    CdTe Emission: 520 nm

    Cadmium Telluride (CdTe) Quantum Dots, dry powder (dispersible in water) The QDs are enriched in Cd. The brutto formula can be expressed by Cd2-3Te1 The surface of CdTe is coated with mercaptosuccinic acid (MSA) (≤650nm); mercaptopropionic acid (MPA)...
  • CdSe/ZnS in Powder Emission: 540nm

    CdSe/ZnS in Powder Emission: 540nm

    CdSe/ZnS core/shell Quantum Dots in powder form Highly luminescent semiconductor nanocrystals coated with trioctylphosphine oxide. Readily soluble in toluene, chloroform, tetrahydrofuran, pyridine etc. Not soluble in water, alcohols, ethers. ZnS shell...
  • CdSe/ZnS in water Emission: 470 nm

    CdSe/ZnS in water Emission: 470 nm

    CdSe/ZnS Quantum Dots with Carboxylic Acid Ligand in Water PL FWHM (nm) 20-30 Quantum Yield >50%UV Peak: 460 (+/-10) nm Emission Peak: 470 (+/-10) nm FWHM (nm): 20-24 Core Dia (nm): 2-2.5; Shell Thickness (nm): 6-7 Total Dia (nm): 8-9 Product #...
  • CdSe in Toluene ABS: 480 nm Emm: 485-510 nm

    CdSe in Toluene ABS: 480 nm Emm: 485-510 nm

    Cadmium Selenide (CdSe) core Quantum Dots with Octadecyl amine (ODA) ligands in Toluene (also available in Hexane, Chloroform and other select solvents) PL FWHM (nm): 23-28 UV-Vis FWHM (nm): 22-26 Quantum Yield: >30% UV Peak (+/- 10 nm): 480 nm...
  • CdS in Toluene Abs: 380 nm Emm: 385-410 nm

    CdS in Toluene Abs: 380 nm Emm: 385-410 nm

    Cadmium Sulfide Quantum Dots stabilized by Oleic acid in Toluene (also available in Hexane, Chloroform and other select solvents) PL fwhm: 16~24 nm UV-Vis hwhm: 26-34 nm Quantum Yield >20%UV Peak (+/- 10 nm): 380 nm Crystal size: 2.8 nm Emission Peak:...
  • PbS  in Toluene Emission: 1100 nm

    PbS in Toluene Emission: 1100 nm

    Lead Sulfide (PbS) core quantum dots with Oleic acid in Toluene (also available in Hexane, Chloroform and other select solvents) PL FWHM: 150(+/-)50nm UV-Vis FWHM: 150nm Quantum Yield: +40% Concentration: 10mg/mL Emission: 1100 nm (+/- 50 nm) PbS...