Lead Sulfide Quantum Dots (PbS QD) 1350 nm

Lead Sulfide (PbS) Quantum Dots, engineered for a peak emission at 1350 nm, are high-performance semiconductor nanocrystals designed for elite applications in the infrared spectrum. PbS QDs are renowned for their high dielectric constant and exceptionally large Bohr exciton radius, which allows for precise and stable band-edge tuning. At 1350 nm, these dots exhibit strong absorption and emission properties that facilitate efficient charge carrier separation and transport. Their high photoluminescence quantum yield and photostability make them a superior choice for solution-processed optoelectronics. Synthesized with advanced surface passivation techniques, these quantum dots minimize mid-gap trap states, ensuring maximum performance in devices requiring high-energy conversion and fast response times in the short-wave infrared range.

Applications

• SWIR Photodetectors: Acts as the active sensing layer for high-resolution infrared cameras, enabling vision through atmospheric haze, smoke, and certain plastics for industrial inspection and defense.
• Next-Gen Infrared LEDs: Used in the fabrication of efficient 1350 nm light sources for non-invasive medical monitoring, moisture analysis, and specialized night-vision illumination.
• High-Efficiency Photovoltaics: Integrated into tandem or quantum dot solar cells to capture the infrared portion of the solar spectrum, effectively increasing the theoretical efficiency limits of photovoltaic devices.
• NIR-II Biological Imaging: Functions as a bright fluorescent probe for deep-tissue imaging; the 1350 nm emission provides reduced scattering and minimal background interference compared to visible light fluorophores.
• Advanced Thin-Film Transistors (TFTs): Employed in flexible and transparent electronics as a high-mobility semiconductor layer, allowing for the development of smart infrared-sensing surfaces.
• Electrocatalysis & Hydrogen Production: Leveraged for their unique surface area and electronic properties to enhance charge transfer in electrochemical reactions and solar-to-fuel conversion systems.
• Optical Fiber Sensors: Applied in specialized fiber-optic sensors for measuring temperature, pressure, or chemical concentration in harsh environments using infrared signaling.