论文部分内容阅读
LED正向导电时,半导体内处于禁带下端的空穴与导带中自由电子相向扩散,在PN结里导带中的高能级的电子会落入能级较低空穴,电子-空穴复合成能量低很多的价带中的共价键电子。与此同时释放出多余的能量(光)。
When the LED is conducting in the forward direction, the holes in the semiconductor at the lower end of the forbidden band diffuse with the free electrons in the conduction band. High-level electrons in the conduction band of the PN junction will fall into lower-level holes, electron-holes Complex into a much lower energy valence band covalent bond electrons. At the same time release the excess energy (light).