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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).
A fourth element is often added to a I-III-VI 2 material to tune the bandgap for maximum solar cell efficiency. A representative example is copper indium gallium selenide (CuIn x Ga (1– x ) Se 2 , E g = 1.7–1.0 eV for x = 0–1 [ 1 ] ), which is used in copper indium gallium selenide solar cells .
The semiconductor materials used in electronic devices are doped under precise conditions to control the concentration and regions of p- and n-type dopants. A single semiconductor device crystal can have many p- and n-type regions; the p–n junctions between these regions are responsible for the useful electronic behavior.
The term solid-state became popular at the beginning of the semiconductor era in the 1960s to distinguish this new technology. A semiconductor device works by controlling an electric current consisting of electrons or holes moving within a solid crystalline piece of semiconducting material such as silicon, while the thermionic vacuum tubes it replaced worked by controlling a current of ...
A semiconductor device is an electronic component that relies on the electronic properties of a semiconductor material (primarily silicon, germanium, and gallium arsenide, as well as organic semiconductors) for its function. Its conductivity lies between conductors and insulators. Semiconductor devices have replaced vacuum tubes in
Pages in category "Semiconductor material types" The following 11 pages are in this category, out of 11 total. This list may not reflect recent changes. B.
(a) Structure of a hexagonal TMD monolayer. M atoms are in black and X atoms are in yellow. (b) A hexagonal TMD monolayer seen from above. Transition-metal dichalcogenide (TMD or TMDC) monolayers are atomically thin semiconductors of the type MX 2, with M a transition-metal atom (Mo, W, etc.) and X a chalcogen atom (S, Se, or Te).
Meanwhile, the band gap for the Fe analogue is approximately 0.7 eV between 150 K and 300 K, making it a semiconductor. [7] In contrast, cobalt oxyselenide La 2 Co 2 O 3 Se 2 is antiferromagnetically ordered, suggesting that although the different transition metals are responsible for the changes in an oxyselenide's magnetic property, the ...