PbS core-type quantum dots oleic acid coated, fluorescence λem 1600 nm, 10 mg/mL in toluene
Our PbS quantum dots have a fully crystalline inorganic core and are organically stabilized with an oleic acid coating, which makes their surface hydrophobic in nature. They exhibit high colloidal and thermal stability, as well as strong emissions with narrow fluorescence bands, owing to their small particle size distributions. These particles absorb all light in the UV, VIS and NIR, up to 900 nm. Their size-dependent absorption and emission properties make them suitable for different applications: such as, absorber materials in photovoltaics, detectors and photodiodes, and phosphors in IR-emitters (solid state lighting, SSL), among many others.
PbS core-type quantum dots | |
Product No. | NRE-56004 |
Concentration | 10mg/ml |
Purity | 99.9% |
Formula | PbS |
Florescence | Λem 1600nm |
APS | <10nm |
Solvent | Toluene |
Quantum Yield | 40-80% |
FWHM | <30nm |
Form | Liquid |
PbS core-type quantum dots
Applications
PbS (Lead Sulfide) core-type quantum dots have unique properties due to their small size, which results in quantum confinement effects. These properties make PbS quantum dots highly versatile for various advanced applications, especially in fields like optoelectronics, biomedicine, energy, and sensing.
Solar Cells (Quantum Dot Solar Cells)
PbS quantum dots are widely researched for use in quantum dot solar cells (QDSCs). Due to their size-tunable optical properties, PbS QDs can be engineered to absorb light across a broad spectrum, including the infrared region. This enables the creation of highly efficient solar cells that can harvest more energy from sunlight.
Advantages:
Tunable Band Gap: The band gap of PbS quantum dots can be adjusted by controlling their size, which helps optimize the absorption of sunlight.
Infrared Absorption: PbS quantum dots are particularly useful for harvesting energy in the infrared part of the spectrum, which is typically wasted in conventional solar cells.
Solution Processing: PbS QDs can be processed in solution, making them suitable for large-area, low-cost manufacturing.
Potential: PbS quantum dot solar cells have shown impressive power conversion efficiencies, though challenges remain in improving the stability and scalability of these devices.
Photodetectors and Infrared Sensors
PbS quantum dots are excellent candidates for photodetectors and infrared sensors because of their ability to absorb and emit in the near-infrared (NIR) range (typically 900–1600 nm).
Applications:
Night Vision and Thermal Imaging: PbS quantum dots are used in devices that require detection of low-light or infrared radiation, such as night-vision goggles, thermal cameras, and remote sensing applications.
Telecommunications: Due to their infrared absorption properties, PbS QDs are suitable for optoelectronic devices used in fiber-optic communication systems.
Light-Emitting Diodes (LEDs)
PbS quantum dots can be used in light-emitting diodes (LEDs), particularly for emitting light in the infrared and visible ranges. The tunable size of PbS quantum dots allows for precise control over the emission wavelengths, which is useful in a variety of optoelectronic devices.
Applications:
NIR and IR LEDs: PbS QDs are being explored for applications requiring light emission in the near-infrared region, such as in communication, sensors, and biomedical imaging.
Quantum Dot Displays: PbS QDs can be integrated into display technologies, including QLEDs (quantum dot LEDs), which offer better color purity, energy efficiency, and brightness compared to traditional displays.