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Zinc selenide is the inorganic compound with the formula ZnSe. It is a lemon-yellow solid although most samples have a duller color due to the effects of oxidation. It is an intrinsic semiconductor with a band gap of about 2.70 eV at 25 °C (77 °F), equivalent to a wavelength of 459 nm.
Stilleite is a selenide mineral, zinc selenide, with the formula Zn Se.It has been found only as microscopic gray crystals occurring as inclusions in linnaeite associated with other selenide and sulfides.
Zinc selenide was the first material for blue LEDs, but gallium nitride dominates that market. [90] Cadmium selenide was an important component in quantum dots. [citation needed] Sheets of amorphous selenium convert X-ray images to patterns of charge in xeroradiography and in solid-state, flat-panel X-ray cameras. [91]
The selenide dianion Se 2− forms a variety of compounds, including the minerals from which selenium is obtained commercially. Illustrative selenides include mercury selenide (HgSe), lead selenide (PbSe), zinc selenide (ZnSe), and copper indium gallium diselenide (Cu(Ga,In)Se 2). These materials are semiconductors.
A compound semiconductor is a semiconductor compound composed of chemical elements of at least two different species. These semiconductors form for example in periodic table groups 13–15 (old groups III–V), for example of elements from the Boron group (old group III, boron, aluminium, gallium, indium) and from group 15 (old group V, nitrogen, phosphorus, arsenic, antimony, bismuth).
Zinc selenide (ZnSe) Indium gallium nitride (InGaN) Silicon carbide (SiC) as substrate Silicon (Si) as substrate — (under development) Violet: 400 < λ < 450 2.76 < ΔV < 4.0 Indium gallium nitride (InGaN) Purple: multiple types 2.48 < ΔV < 3.7 Dual blue/red LEDs, blue with red phosphor, or white with purple plastic Ultraviolet: λ < 400 3.1 ...
Commercially significant is zinc selenide, which is used in some infrared optics. Cadmium selenide is a pigment but its use has been declining because of environmental considerations. Copper indium selenide (CuInSe 2) has attractive potential for photovoltaic devices, but these applications have not been implemented widely. [1]
Zinc compounds are chemical compounds containing the element zinc which is a member of the group 12 of the periodic table. The oxidation state of zinc in most compounds is the group oxidation state of +2. Zinc may be classified as a post-transition main group element with zinc(II). Zinc compounds are noteworthy for their nondescript appearance ...