A material that is intentionally added to a pure semiconductor material to increase the population of free holes in that semiconductor, resulting in a net positive charge. A semiconductor that has had acceptor material added to it is called "p-type."

a dopant atom with a lower valence than the host material atoms. Acceptor atoms add energy levels above the valence band.

(chemistry) in the formation of a coordinate bond it is the compound to which electrons are donated

An impurity in a semiconductor that accepts electrons excited from the valence band.

An element, such as boron, indium, and gallium used to create a free hole in a semiconductor. The acceptor atoms are required to have one less valence electron than the semiconductor.

group three elements in the periodic table such as boron aluminum, Al, gallium, Ga, or indium, In, have one less electron in the outer most energy level than silicon, Si. When these atoms are introduced into silicon, an impurity level is created near the valence band. At zero degrees kelvin the impurity level is empty, at room temperature sufficient energy is available to excite electrons from the valence band into the impurity level. Because these Elements introduce impurity levels that accept electrons, they are referred to as acceptors. See also donor.

In a bill of exchange a creditor (the drawer) orders a debtor (the drawee) to pay a certain amount at a certain maturity date. This order is not valid unless it is accepted by the drawee, who is also called the acceptor.

A person who accepts a time draft. By accepting the draft, the acceptor is primarily liable to pay the draft at maturity. Compare "Acceptance."

A debtor who signs a Bill of Exchange acknowledging or accepting his obligation to pay.

The addressee of a Bill of Exchange. This party holds the primary liability to pay the face value of the bill to its owner upon maturity.

A runner officially listed to start in a race.