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Lead Selenide Nanoparticles

Lead Selenide Nanoparticles

Lead Selenide Nanoparticles
Product No NRE-5128
CAS 12069-00-0
Purity 99.9%
Formula PbSe
APS <100 nm (Can be Customized)
Color NA
Molecular Weight 286.16 g/mol
Density 8.1 g/mL
Melting Point 1078 °C
Boiling Point NA

Lead selenide Nanoparticles

Introduction

Lead selenide (PbSe) is an inorganic semiconductor material made up of lead (Pb) and selenium (Se). It is an n-type semiconductor with a narrow band gap (about 0.27 eV at room temperature), making it highly useful in infrared (IR) applications. When reduced to the nanoscale, PbSe exhibits unique properties due to quantum size effects, such as enhanced optical absorption, size-tunable band gaps, and improved charge transport. These properties make PbSe nanoparticles (often termed quantum dots) highly desirable in various fields, including photonics, biomedical imaging, sensing, and energy conversion.

Properties

Quantum Size Effects:

Due to their small size (typically a few nanometers), PbSe nanoparticles exhibit quantum confinement effects, which alter their electronic and optical properties compared to bulk PbSe. These effects enable tunable absorption and emission spectra, making PbSe nanoparticles valuable for optical applications.

Narrow Band Gap:

PbSe has a narrow band gap, which allows it to absorb light in the infrared (IR) region of the electromagnetic spectrum. This makes PbSe nanoparticles ideal for thermal imaging and night-vision devices.

High Absorption Coefficient:

PbSe nanoparticles exhibit a high absorption coefficient in the infrared range, making them highly effective for photodetectors and solar cells designed for IR light harvesting.

Excellent Charge Transport:

Due to their semiconducting properties, PbSe nanoparticles demonstrate good charge carrier mobility and electron transport, which enhances their performance in applications like photoelectronics and energy devices.

Optical Tunability:

By controlling the particle size, the optical properties of PbSe nanoparticles, including absorption and emission spectra, can be tuned over a wide range, which is beneficial in sensing and detection technologies.

 

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