The difference between LED and fluorescent lamps
LED is a solid-state light source that has a long life and is environmentally friendly and efficient, and leds are now safer.
LED is a solid-state light source with long life and energy conservation and high efficiency The fluorescent lamp belongs to the life of the gaseous light source 6000-8000h, the light effect is low
Fluorescent tube filled with low-pressure argon or argon neon mixed gas and mercury vapor, and the inside surface of the fluorescent tube in the glass is coated with phosphor fluorescent paint, has made of tungsten filament in the ends of the tube coil. When power on, first of all, current through the filament heating and release the electronic, electronic tube gas into plasma, and make the tube current increase, when the voltage between the two groups of filament lamp began to produce discharge after more than a certain value, the mercury vapor from 253.7 nm and 185 nm wavelength ultraviolet, fluorescence phosphatic fluorescent paint on the surface of the pipe inside can absorb ultraviolet light, and release the lower wavelength of visible light. The color of the light is controlled by the proportion of phosphor, while the glass tube avoids harmful ultraviolet rays and other harmful substances
Leds are composed mainly of PN junction chips, electrodes and optical systems. Its luminosity - the chip's area of 12 * 23mil (1mil = 0.0254mm), currently has a large chip LED in the world, with a total area of 40 * 40mil. The process of luminescence consists of three parts: fluid injection, composite radiation and light transmission of positive bias. Tiny semiconductor chip is encapsulated in the pure epoxy resin content, while the electrons through the crystal, negatively charged electrons move to the positively charged hole area and complex, with disappearance of electrons and holes at the same time produce photons. The larger the energy between the electron and the hole, the higher the energy of the photon. Photon energy, in turn, and the color of the light, the spectrum of visible light range, blue light, purple light carrying the most energy, orange colored light, red light with the least amount of energy. Because different materials have different bands, they can emit different colors of light
