Overview
Quantum dots (QDs) are semiconductor nanocrystals with size-dependent optical and electronic properties, widely used in display technologies, bioimaging, photovoltaics, sensors, and optoelectronic devices.
High-quality quantum dot synthesis requires precise control over precursor purity, reaction kinetics, ligand chemistry, and surface passivation. J&K Scientific provides a comprehensive portfolio of quantum dot synthesis reagents, supporting both laboratory-scale research and pilot-scale production.
1. Core Quantum Dot Precursors
1.1 Metal Precursors
High-purity metal salts and organometallic compounds are critical for controlled nucleation and growth.
Typical Metal Sources:
-
Cadmium precursors (CdO, CdCl₂, Cd acetate)
-
Zinc salts (Zn acetate, Zn stearate)
-
Indium compounds (InCl₃, In acetate)
-
Lead precursors (PbO, Pb halides)
-
Copper salts (CuI, CuCl)
Applications:
-
CdSe, CdS, CdTe QDs
-
ZnS shell growth
-
InP QDs
-
Perovskite quantum dots (CsPbX₃)
1.2 Chalcogen Sources
Chalcogen reagents control nanocrystal formation and bandgap tuning.
-
Selenium powder / TOP-Se
-
Sulfur powder / TMS₂S
-
Tellurium compounds
Used in:
-
CdSe QDs
-
CdS QDs
-
Core–shell nanostructures
2. Surface Ligands & Capping Agents
Ligands regulate particle size, stability, and dispersibility.
Common Ligands:
-
Oleic acid (OA)
-
Oleylamine (OLA)
-
Trioctylphosphine (TOP)
-
Trioctylphosphine oxide (TOPO)
-
Stearic acid
-
Thiol-based ligands
Functions:
-
Control nanocrystal growth
-
Improve colloidal stability
-
Enhance photoluminescence quantum yield
-
Enable surface modification
3. Solvents for Quantum Dot Synthesis
High-boiling-point, oxygen-free solvents are essential for hot-injection methods.
-
Octadecene (ODE)
-
Benzyl ether
-
Toluene
-
Hexane
-
Chlorobenzene
Applications:
-
Hot injection synthesis
-
Ligand exchange reactions
-
Purification and dispersion
4. Shell Growth & Surface Passivation Materials
To enhance quantum yield and stability:
-
ZnS precursors
-
ZnSe precursors
-
CdS shell reagents
-
Silica coating materials
Core-shell structures improve:
-
Photostability
-
Thermal stability
-
Chemical robustness
5. Perovskite Quantum Dot Reagents
For CsPbBr₃, CsPbI₃ and related systems:
-
Cs₂CO₃
-
PbBr₂ / PbI₂
-
Oleic acid
-
Oleylamine
-
Octadecene
These materials enable synthesis of high-brightness perovskite nanocrystals for LEDs and displays.
6. Applications of Quantum Dot Synthesis Reagents
Our reagents support:
-
QLED display materials
-
Bioimaging probes
-
Fluorescent labels
-
Solar cells & tandem devices
-
Photodetectors
-
Chemical sensors
7. Key Advantages
-
High purity (≥99% to electronic grade)
-
Low metal contamination
-
Batch-to-batch consistency
-
Suitable for research and scale-up
-
Global supply chain support
8. Need Bulk Quantities? Let’s Talk Strategy.
To ensure you get the most competitive rates and reliable lead times for your specific scale, we offer customized pricing for industrial orders.
Contact our technical sales team today for a fast, formal quotation tailored to your project requirements.
艳 李
