Lead Sulfide Quantum Dots (PbS QD) 1150 nm

Lead Sulfide (PbS) Quantum Dots, optimized for a peak emission at 1150 nm, are high-purity semiconductor nanocrystals designed for precision performance in the Near-Infrared (NIR) spectrum. PbS QDs are renowned for their strong quantum confinement effects due to a large Bohr exciton radius, allowing for exceptional control over the optical bandgap. At 1150 nm, these dots exhibit high absorption coefficients and efficient charge-carrier generation, making them ideal for high-speed optoelectronic transitions. Their superior photostability and high photoluminescence quantum yield (PLQY) provide a significant advantage over organic dyes. Engineered with meticulous surface passivation, these quantum dots minimize electronic trap states, facilitating high carrier mobility and stable performance in integrated thin-film devices and advanced sensing platforms.

Applications

• High-Performance Photodetectors: Functions as the primary active material in infrared sensors, offering rapid response times and high detectivity for applications in LiDAR, machine vision, and remote sensing.
• Infrared Light Emitting Diodes (LEDs): Utilized in the development of stable 1150 nm emitters for security systems, night vision, and non-invasive medical diagnostic tools.
• Advanced Photovoltaics & Solar Cells: Integrated into quantum dot solar cells to harvest the high-intensity portion of the solar infrared spectrum, significantly improving the short-circuit current and overall conversion efficiency.
• Biological Imaging (NIR-I/II): Serves as a bright, deep-penetrating fluorescent probe for in-vivo imaging, providing high contrast with reduced background autofluorescence for molecular tracking and tumor detection.
• Thin-Film Transistors (TFTs): Employed in flexible and solution-processed electronics as a high-mobility semiconductor layer, enabling the creation of smart, infrared-responsive surfaces.
• Electrocatalysis & Hydrogen Evolution: Leveraged for their large surface-to-volume ratio and tunable electronic states to enhance catalytic activity in electrochemical energy storage and conversion systems.
• Spectroscopic Sensors: Applied in the detection of specific molecular vibrations for the pharmaceutical, agricultural, and food industries to monitor moisture content and chemical composition.