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(实验部分) [题4]测定发光二极管的效率引言: 在这个实验中我们要用两种半导体器件——发光二极管(LED)和光电二极管(PD)。 1.对于一个发光二极管,供给它的电能的一部分用来激发电子到较高的能级.当一个被激发的电子落回到—个较低的能级时,要发射一个能量为E_(photo(?))的光子.
(Experimental part) [Test 4] Determination of Efficiency of Light Emitting Diodes Introduction: In this experiment, we used two types of semiconductor devices, a light emitting diode (LED) and a photodiode (PD). 1. For a light emitting diode, a portion of the electrical energy supplied to it is used to excite the electrons to a higher energy level. When an excited electron falls back to a lower energy level, an energy is emitted as E_(photo Photon of (?)).