Electronics
Rare earth yellow fluorescent powder detection for white LED lamps
Rare earth yellow fluorescent powder detection for white LED lamps
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Rare earth yellow fluorescent powder detection for white LED lamps

An LED light is a semiconductor material chip that emits electricity. It is solidified onto a bracket with silver or white glue, and then connected to the chip and circuit board with silver or gold wire. The surrounding area is sealed with epoxy resin to protect the internal core wire. Finally, the shell is installed, so the seismic resistance of the LED light is good. LED (Light Emitting Diode) is a solid-state semiconductor device that can convert electrical energy into visible light, which can directly convert electricity into light. The heart of an LED is a semiconductor chip, one end of which is attached to a bracket, one end is the negative electrode, and the other end is connected to the positive electrode of the power supply, making the entire chip encapsulated in epoxy resin. A semiconductor chip consists of two parts, one is a P-type semiconductor in which holes dominate, and the other is an N-type semiconductor in which electrons dominate. But when these two semiconductors are connected, a P-N junction is formed between them. When an electric current passes through a wire and acts on this chip, electrons are pushed towards the P region, where they recombine with holes and emit energy in the form of photons. This is the principle of LED light emission. The wavelength of light, also known as the color of light, is determined by the material that forms the P-N junction. LED can directly emit red, yellow, blue, green, blue, orange, purple, and white light

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