In fixture marketing, LED light and CFL are the most popular fixtures. Due to the difference working theory, their features are not the same. Now let's focus on the theory comparison between LED Flood Lights s and CFL.
The kernel of LED flood lights is light emitting diode, which is called LED for short. It is a kind of solid-state semiconductor device, with the ability of converting electric energy into light energy. LED chip is attached in bracket; one end is negative pole while the other end is connected in the positive pole of LED driver. In this way, the whole chip is packaged by epoxy resin. In LED flood lights fixtures, it is constituted by three parts, N layer from N-type semiconductor, P layer from P-type and the active layer in the middle. After added forward biased, the electron holes in P-type area diffuse towards negative direction and enter active area. Meanwhile, electrons in N-type area diffuse towards positive direction and also enter active area. When the electrons and holes combine together, the fixture will give out light spontaneously. We always see different colors of light in the street, red, orange, yellow, green, blue and so on. How does it form? It's owing to different materials. In addition, LED light fixture would become much brighter with the increase of positive current. In a word, the stability of LED light beam is affected by the stability of current.
As a matter of fact, CFL is a kind of compact fluorescent lamp with personal ballast. When turn on CFL, it would firstly pass through electronic ballast to heat the lamp filament of tube. Next, the lamp filament would emit electron. These electrons would collide with argon atoms in the tube. As a result, the argon atoms have got energy to collide with mercury atoms. After absorbed energy, these mercury atoms occur to jump to generate ionization, which forms into plasma state in tube. In this condition, the voltage between the two ends of tube is connected to send out ultraviolet ray, which evokes fluorescent powder give out light.