Selenide


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selenide

[′sel·ə‚nīd]
(inorganic chemistry)
M2Se A binary compound of divalent selenium, such as Ag2Se, silver selenide.
(organic chemistry)
An organic compound containing divalent selenium, such as (C2H5)2Se, ethyl selenide.

Selenide

 

any of the chemical compounds formed with selenium and metals. Selenides are analogues of sulfides and tellu-rides. They are obtained by, for example, the direct reactions of elements, the reactions of metals and corresponding oxides with H2Se, and the action of H2Se on solutions of metal salts. Normal selenides and polyselenides are known, the former being more stable. Selenides of the transition elements of groups IV-VIII and of the lanthanides and actinides form chemically stable, refractory (melting points 2000°–2500°C) compounds.

Selenides of metals belonging to the zinc subgroup are primarily used in resistors and photoelectric cells. Gallium selenides are used in laser technology and nonlinear optics. The selenides of transition metals can be used in high-temperature semiconductor devices; diselenides of molybdenum and tungsten serve as solid lubricants in the friction points of machines. Organic selenides are also known.

REFERENCES

Chizhikov, D. M., and V. P. Schastlivyi. Selen i selenidy. Moscow, 1964.
Obolonchik, V. A. Selenidy. Moscow, 1972.
Medvedeva, Z. S. Khal’kogenidy elementov III B podgruppy periodicheskoi sistemy. Moscow, 1968.
References in periodicals archive ?
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announced today that MiaSole, the leading manufacturer of Copper Indium Gallium Selenide (CIGS) thin-film photovoltaic solar panels, has deployed Camstar's SolarSuite[TM] enterprise software platform throughout its entire Solar manufacturing value chain.
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By adding a gold compound to a solution in which nanorods of the semiconductor cadmium selenide are growing, a team at the Hebrew University of Jerusalem led by Uri Banin has created semiconductor cylinders tipped with gold beads.
Window material options include AR coated sapphire or glass, calcium fluoride, zinc selenide or other optical materials as warranted by the application.
In contrast to the first production line, Sulfurcell is using selenide instead of sulphur in its new high-performance modules.