A charge carrier is a mobile particle that carries an electric current through a material, namely an electron or a hole. The number and mobility of charge carriers determine how well a material conducts. In semiconductors, charge carriers can be generated thermally or introduced by doping.

载流子是在材料中传导电流的可移动粒子,即电子或空穴。载流子的数目和迁移率决定材料的导电能力。在半导体中,载流子可由热生成,也可通过掺杂引入。