Lead Sulfide Quantum Dots (PbS QD) 1050 nm

Lead Sulfide (PbS) Quantum Dots, meticulously tuned for a peak emission at 1050 nm, represent a versatile semiconductor solution for high-performance Near-Infrared (NIR) applications. Characterized by a strong quantum confinement effect, these nanocrystals offer a broad absorption spectrum coupled with a sharp, size-dependent emission. At 1050 nm, these dots exhibit an ideal bandgap for electronic applications requiring efficient charge separation and high carrier mobility. Their high molar extinction coefficient and exceptional photostability make them superior to conventional organic fluorophores. Engineered with advanced surface passivation to minimize surface traps, our PbS QDs ensure high photoluminescence quantum yields (PLQY) and consistent performance in both liquid phase and thin-film optoelectronic device architectures.

Applications

• Infrared Photodetectors: Functions as the active semiconductor layer for high-detectivity sensors, bridging the gap between visible and short-wave infrared detection for LiDAR and night-vision technologies.
• Next-Generation Photovoltaics: Highly effective in quantum dot solar cells to harvest the high-intensity NIR portion of the solar spectrum, enhancing the efficiency of single-junction and tandem solar devices.
• Deep-Tissue Bioimaging (NIR-I): Serves as a bright and stable fluorescent probe for in-vivo imaging; 1050 nm light penetrates deeply into biological tissues with significantly reduced scattering and background autofluorescence.
• NIR Light Emitting Diodes (LEDs): Utilized in the development of efficient infrared emitters for secure optical communication, medical diagnostic tools, and specialized illumination.
• High-Mobility Transistors: Employed in solution-processed thin-film transistors (TFTs) as a tunable semiconductor material, facilitating the growth of flexible and wearable electronics.
• Advanced Electrocatalysis: Leveraged for their high surface-to-volume ratio to act as efficient catalysts in electrochemical reactions, including hydrogen evolution and CO2 reduction.
• Optical Gas Sensing: Integrated into sensors designed to detect the infrared absorption signatures of various gases, providing a rapid and non-destructive analysis method.