Also found in: Dictionary, Thesaurus, Medical, Wikipedia.


(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.



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.


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 ?
Unlike silica glass, which traditionally is used in optical fibers, zinc selenide is a compound semiconductor.
Klimov had begun studying lead selenide nanocrystals as potential components in lasers.
These materials include but not limited to: fused silica, silica-on-silicon, lithium niobate, silicon, lithium tantalate, sapphire, yttrium aluminium garnet, germanium, germanium telluride, zinc selenide, and gallium arsenide, as well as composites of the above.
MiaSole, the leading manufacturer of Copper Indium Gallium Selenide (CIGS) thin-film photovoltaic solar panels, has signed purchase agreements with juwi Solar GmbH (juwi Solar), a developer, turnkey engineering, procurement and construction (EPC) contractor and operator of solar power plants.
recently in a pilot run made Taiwan's first 600 x 1200mm copper indium gallium selenide (CIGS) solar panel boasting a 17% photovoltaic conversion rate, coming close to the 20% rate achieved by monocrystalline silicon wafer.
Compared with this new class of quantum dots, semiconductor dots are much larger, containing hundreds to thousands of atoms, and are typically made of toxic materials such as cadmium selenide.
In addition to the diamond crystal, it is compatible with multiple crystal materials, including Germanium, Zinc Selenide, Silicon, and AMTIR, to accommodate special sampling needs.
Tenders are invited for Purchase Of Chemicals: Molybenum Tungsten Diselenide (Mowse2), Single Crystal Molybdenum Disulfied (Mos2) Small 10x10mm, Molybdenum Tungsten Disulfied (Mows2), Single Crystal Molybdenum Diselenide (Mose2), Gallium Sulfied (Gas), Gallium Selenide (Gase) Etc
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.