| Lead(II) selenide | |
|---|---|
| Identifiers | |
| CAS number | [12069-00-0] |
| Properties | |
| Molecular formula | PbSe |
| Molar mass | 286. CAS registry numbers are unique numerical identifiers for Chemical compounds Polymers biological sequences mixtures and Alloys They are also referred to A chemical formula is a way of expressing information about the Atoms that constitute a particular Chemical compound, and how the relationship between those atoms changes Molar mass, symbol M, is the Mass of one mole of a substance ( Chemical element or Chemical compound) 16 g/mol |
| Melting point |
1078 °C |
| Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox disclaimer and references |
|
Lead selenide (PbSe), or lead(II) selenide, a selenide of lead, is a semiconductor material. The melting point of a solid is the temperature range at which it changes state from solid to Liquid. In Chemistry, the standard state of a material is its state at 1 bar (100 Kilopascals exactly Characteristics Lead has a dull luster and is a dense, Ductile, very soft highly Selenium (səˈliniəm is a Chemical element with the Atomic number 34 represented by the chemical symbol Se, an atomic mass of 78 The selenide Ion is Se2&minus A selenide is a chemical compound in which Selenium serves as an Anion with Oxidation number Characteristics Lead has a dull luster and is a dense, Ductile, very soft highly A semiconductor' is a Solid material that has Electrical conductivity in between a conductor and an insulator; it can vary over that It forms cubic crystals of the NaCl structure; it has a direct bandgap of 0. The cubic crystal system (or isometric) is a Crystal system where the Unit cell is in the shape of a Cube. For sodium chloride in the diet see Salt. Sodium chloride, also known as common salt, table salt, or Halite, is a In Semiconductor Physics, a direct Bandgap means that the minimum energy of the Conduction band lies directly above the maximum energy of the 27 eV at room temperature. (Note that[1] incorrectly identifies PbSe and other IV-VI semiconductors as indirect gap materials. ) It is a grey crystalline solid material.
It is used for manufacture of infrared detectors for thermal imaging, operating at wavelengths between 1. An infrared detector is a Photodetector that reacts to Infrared (IR Radiation. wiki stranglesnakejpg|thumb|Thermographic image of a Snake held by a human]] Infrared Thermography, thermal imaging, or thermal video, is a type of 5-5. 2 µm. It does not require cooling, but performs better at lower temperatures. The peak sensitivity depends on temperature and varies between 4-4. 7 µm.
Single crystal nanorods and polycrystalline nanotubes of lead selenide were synthesized via controlled organism membranes. A single crystal, also called monocrystal, is a Crystalline Solid in which the Crystal lattice of the entire sample is continuous and unbroken In Nanotechnology, nanorods are one morphology of nanoscale objects Polycrystalline materials are solids that are composed of many Crystallites of varying size and orientation The diameter of the nanorods is approx. 45 nm and their length is up to 1100 nm, for nanotubes the diameter is 50 nm and the length up to 2000 nm. [1]
Lead selenide nanocrystals embedded into various materials can be used as quantum dots, for example in nanocrystal solar cells. A quantum dot is a Semiconductor whose Excitons are confined in all three Spatial dimensions. Nanocrystal solar cells or Quantum dot solar cells are Solar cells based on a Silicon Substrate with a Coating of Nanocrystals
The mineral clausthalite is a naturally occurring lead selenide. A mineral is a naturally occurring substance formed through geological processes that has a characteristic chemical composition a highly ordered atomic structure and specific Lead selenide () or lead(II selenide, a Selenide of Lead, is a Semiconductor material.
- ^ Kittel, C. (1986). Introduction to Solid State Physics: 6th Edition, Wiley & Sons, New York.
See also
References
- ^ Kittel, C. Lead telluride is a compound of lead and Tellurium (PbTe it is a Narrow gap semiconductor. (1986). Introduction to Solid State Physics: 6th Edition, Wiley & Sons, New York.
- An emission band-system of PbSe, R. F. Barrow and E. E. Vago, Proc. Phys. Soc. London vol. 56 pp. 76 (1944)
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