The difference between electroluminescence and photoluminescence

1. Electroluminescence is different from photoluminescence in that electroluminescence refers to electroluminescence and photoluminescence refers to the luminescence of photoluminescence materials. The principles of electroluminescence and photoluminescence are different.
2. Electroluminescence, also known as electric field luminescence, or EL for short, is a physical phenomenon in which the electrons excited by the electric field hit the light center by the electric field generated by the voltage applied to the two electrodes, resulting in the transition, change and compound of electrons between energy levels. Examples of electroluminescent materials include zinc sulfide doped with copper and silver and blue diamonds. At present, the research direction of electroluminescence is mainly the application of organic materials.
3. Photoluminescence refers to the phenomenon that an object relies on an external light source for irradiation to obtain energy and generate excitation leading to luminescence. It roughly passes through three main stages of absorption, energy transfer and light emission. The energy transfer is due to the motion of the excited state. Ultraviolet, visible and infrared radiation can cause photoluminescence. Such as phosphorescence and fluorescence.