PbS Quantum Dots

Eata Energy supplies lead sulfide (PbS) quantum dots for researchers and product-development teams working with near-infrared and short-wave-infrared materials. Their size-dependent electronic structure makes it possible to tune optical response through nanocrystal design, while colloidal processing supports integration into coatings, thin films, printed layers, and hybrid device architectures.

Our product range is intended to help customers select a formulation around the optical target, solvent system, surface chemistry, concentration, and downstream process. Exact values should be taken from the individual product listing or confirmed for a custom project.

Available PbS Quantum Dots

Dark PbS quantum dot dispersions beside glowing nanocrystals under near-infrared illumination. Figure 1. Concept image of colloidal PbS quantum dots designed for near-infrared material research.

Why PbS Quantum Dots?

Bulk PbS is a narrow-bandgap semiconductor, and quantum confinement in nanoscale crystals shifts its optical properties with particle size. This combination has made colloidal PbS quantum dots a widely studied platform for infrared photodetectors, photovoltaic absorbers, emitters, and other solution-processed optoelectronic structures.

Material Attribute	Practical Relevance
Size-Dependent Optical Response	Nanocrystal size can be used to tune absorption and emission across near-infrared spectral regions.
Solution Processability	Colloidal formulations can be deposited by common liquid-phase coating and printing approaches, subject to formulation and substrate compatibility.
Surface-Chemistry Control	Ligands influence colloidal stability, interparticle spacing, charge transport, and film processing.
Device Integration	PbS QDs are studied in rigid, flexible, hybrid, and multilayer device architectures.

Three-dimensional PbS lattice model surrounded by surface-binding organic chains. Figure 2. Illustration of a PbS nanocrystal with alternating lead and sulfur sites and an organic ligand shell.

Configurable Product Directions

• Optical Target: First excitonic absorption or photoluminescence positioned for a defined NIR or SWIR research window.

• Form: Colloidal dispersion or isolated nanocrystal solid, where available.

• Surface Ligand: As-synthesized long-chain ligand systems, or project-specific ligand-exchange requirements.

• Solvent System: A compatible nonpolar organic solvent or another validated formulation medium.

• Concentration: Standard listing concentration or a project-specific concentration within formulation limits.

• Film Objective: Absorber layer, detector layer, transport layer, blended composite, or printed test structure.

Small, medium, and large nanocrystal ensembles shown with different infrared response halos. Figure 3. Visual representation of size-dependent optical tuning in PbS quantum dots.

Application Areas

Application	How PbS QDs Are Explored
Infrared Photodetectors	Active materials for experimental photoconductors, photodiodes, focal-plane concepts, and integrated NIR/SWIR sensing structures.
Photovoltaics	Infrared-absorbing layers for colloidal quantum dot solar cells, tandem concepts, and flexible or lightweight device research.
NIR Light Emission	Material development for near-infrared electroluminescent and photoluminescent devices.
Optical and Chemical Sensing	Spectral response materials for analyte detection, monitoring, and compact sensor platforms.
Printed Optoelectronics	Ink and coating research for scalable deposition on rigid or flexible substrates.
Hybrid Nanocomposites	Integration with polymers, oxides, transport materials, or other nanocrystals for tailored electronic and optical behavior.

Layered flexible device architecture containing a dense colloidal PbS quantum dot film. Figure 4. Solution-processed PbS quantum dot layer integrated into a thin-film optoelectronic stack.

Selecting a PbS QD Formulation

Step	Decision Point	What to Review
1	Define the spectral goal	Start with the required absorption or emission region and the measurement or device configuration.
2	Match the surface chemistry	Choose a ligand system that supports the dispersion, deposition method, and intended charge-transport behavior.
3	Confirm solvent compatibility	Review substrate resistance, coating method, additives, and film-drying conditions before scale-up.
4	Set concentration and film thickness	Use the optical density and coating process to establish an appropriate solids concentration and deposition sequence.
5	Plan storage and processing	Minimize unvalidated exposure to air, moisture, heat, or incompatible chemicals, and follow product-specific documentation.

Infrared detector module scanning a patterned semiconductor surface with a spectral response map. Figure 5. Conceptual SWIR sensing platform using a PbS quantum dot photodetector material.

Custom PbS Quantum Dot Support from Eata Energy

Projects often require more than a nominal wavelength. Eata Energy can evaluate custom requests involving nanocrystal size, optical target, ligand environment, solvent, concentration, solid or dispersion format, and compatibility with a defined coating or device process. Share the target spectrum, substrate, deposition method, film architecture, and analytical criteria so that the material specification can be aligned with the intended experiment.

Catalog Number	Product Name	Order	Quantity
PBSQD-0001	Octadecylamine-Stabilized PbS Quantum Dots, 850 nm Emission	Inquiry	- +
PBSQD-0002	Octadecylamine-Stabilized PbS Quantum Dots, 1120 nm Emission	Inquiry	- +
PBSQD-0003	Octadecylamine-Stabilized PbS Quantum Dots, 1250 nm Emission	Inquiry	- +
PBSQD-0004	Octadecylamine-Stabilized PbS Quantum Dots, 1330 nm Emission	Inquiry	- +
PBSQD-0005	Octadecylamine-Stabilized PbS Quantum Dots, 1420 nm Emission	Inquiry	- +
PBSQD-0006	Octadecylamine-Stabilized PbS Quantum Dots, 1520 nm Emission	Inquiry	- +
PBSQD-0007	Oil-Soluble PbS Quantum Dots, 850–1550 nm Emission	Inquiry	- +
QDM-ODS-0028	PbS/CdS Quantum Dots, 850±50 nm	Inquiry	- +
QDM-ODS-0029	PbS/CdS Quantum Dots, 950±50 nm	Inquiry	- +
QDM-ODS-0030	PbS/CdS Quantum Dots, 1050±50 nm	Inquiry	- +

For Research or Industrial Raw Materials, Not For Personal Medical Use!