在固态物理学中，受体是把一些物质参杂在半导体里，而让它变成p型半导体。

比方说，当再有四个价电子的硅原子里面参杂只有三个价电子的铝或硼会再硅晶格里形成一个空洞，这些空洞会吸引其他地方的电子，而产生电流，这就形成了p型半导体。

In semiconductor physics, an acceptor is a dopant atom that when added to a semiconductor can form a p-type region.

For example, when silicon (Si), having four valence electrons, needs to be doped as a p-type semiconductor, elements from group III like boron (B) or aluminium (Al), having three valence electrons, can be used. The latter elements are also called trivalent impurities. Other trivalent dopants include indium (In) and gallium (Ga).