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LED灯珠发光原理
信息来源于：互联网 发布于：2022-08-03
PN结的某一电位构成了势垒。当施加正向偏置电压时，势垒减小，P区和N区的大多数载流子相互扩散。由于电子迁移率远大于空穴迁移率，大量电子将扩散到p区，从而在p区形成少数载流子注入。这些电子与价带中的空穴复合，复合过程中获得的能量以光能的形式释放。这就是PN结发光的原理。
