Lead Sulfide Quantum Dots (PbS QD)

Nanografi presents high-quality Lead Sulfide Quantum Dots (PbS) tailored to suit specific requirements.

What are Lead Sulfide Quantum Dots?

Lead Sulfide (PbS) Quantum Dots are semiconductor nanoparticles with tunable emission across the near-infrared (NIR) spectrum, typically ranging from 900 nm to 1600 nm. Their narrow bandgap and strong quantum confinement effects make them highly suitable for infrared optoelectronic applications. PbS QDs exhibit excellent photoluminescence efficiency, size-dependent emission control, and enhanced stability when surface-passivated. Depending on ligand chemistry, they can be dispersed in aqueous or organic systems, offering versatile compatibility for both research and industrial applications.

Synthesis and Applications of PbS Quantum Dots

PbS Quantum Dots are synthesized using colloidal methods that allow precise control of particle size and emission wavelength. Surface passivation and ligand engineering (such as thiols, oleic acid, or hydrophilic ligands) provide stability and enable solubility in aqueous or organic systems. PbS QDs are widely applied in bioimaging, biosensing & diagnostics, infrared photodetectors, telecommunications, environmental monitoring, energy & photocatalysis, and optoelectronics & LEDs. Their NIR emission makes them particularly valuable for medical imaging and advanced optical communication technologies.