also: アクセプタ
noun
Technical term in electronics for an impurity atom that accepts electrons, creating holes in a semiconductor.
シリコンにホウ素をドープすると、アクセプター準位が形成される。
When silicon is doped with boron, an acceptor level is formed.
ドナー (donor) is the opposite impurity type that donates electrons, while アクセプター accepts electrons.
Borrowed from English 'acceptor'.