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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.
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).
The South African postal code system was previously used in Namibia, then "South West Africa", including the enclave of Walvis Bay, which remained part of South Africa until 1994. It was allocated the number range 9000–9299. [6] Following independence, use of the South African postal code system was discontinued. [7]
ZnSe has a reasonably large Verdet constant (roughly 1 min. cm-1 G-1 at = nm) and was suggested for use in optical isolators, see Wunderlich J. A. and DeShazer L. G., Applied Optics 16 (6), 1584 (1977). Note that although the rare-earth orthoferrites have much higher Verdet constants, they are birefringent and aren't much good at producing ...
A selenide is a chemical compound containing a selenium with oxidation number of −2. Similar to sulfide , selenides occur both as inorganic compounds and as organic derivatives, which are called organoselenium compound .
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 ]
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Selenide minerals are those minerals that have the selenide anion as a main component. Selenides are similar to sulfides and often grouped with them. [1] Examples include: achavalite Fe 1-x Se; athabascaite Cu 5 Se 4; clausthalite PbSe; ferroselite FeSe 2; penroseite (Ni,Co,Cu)Se 2; stilleite ZnSe; tiemannite HgSe; umangite Cu 3 Se 2