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Ledsion Lighting Explain Led Structure And Luminescence Principle
Posted at: Offers to Sell and Export | Posted on: Thursday 19 July 2012 1:38 am | Poster last visit: Thursday 24 January 2013 |
Product Description:
LED (Light Emitting Diode), light emitting diode, is a solid state semiconductor devices, which can be
converted directly into electricity for light. The heart of the LED is a semiconductor chip, the chip attached to one end on a bracket, one end is negative, the other end to connect the positive power supply so that the whole chip to be epoxy encapsulated. The semiconductor chip consists of two parts, the part of the P-type semiconductor, the dominant hole in it, the other end of the N-type semiconductor, here is mainly electronic. But when two semiconductor connected to form a PN junction between them. When the current through the wire to the chip, the electrons would be pushed to the P region in the P region electron-hole recombination, and then will be issued in the form of photon energy, which is the principle of LED light. The wavelength of light is the color of light is determined by the material to form a PN junction.
The initial LED as the light of the instructions of the instrumentation, then a variety of light-colored LEDs in traffic lights and a large area display a wide range of applications, resulting in a good economic and social benefits. To 12 inches of red traffic lights, for example, in the United States was long-lived, low-efficiency 140-watt incandescent lamp as a light source, it produces 2000 lumens of white light. The red filter, the light loss of 90%, leaving only 200 lumens of red light. In the light of the new design, Lumileds uses 18 red LED light source, including circuit losses, the total power consumption of 14 watts to produce the same luminous efficiency. The car lights are also an important area of the LED light source applications.
For general lighting, people need a white light source. 1998 white light LED development. The LED is packaged together to make the GaN chip and yttrium aluminum garnet (YAG). GaN chip of blue (λp = 465nm, yellow light shot Wd = 30nm), high-temperature sintering of YAG phosphors with Ce3 + by blue excitation peak 550nm. Blue LED substrate is installed in the reflective cavity bowl, covered with a mixture of YAG thin layer of resin, about 200-500nm. LED substrate issued by the blue part was absorbed by the phosphor, another part of the Blu-ray phosphors emit yellow mixed, can be too white. InGaN / YAG white LED by changing the YAG phosphor chemical composition and to adjust the thickness of the phosphor layer can be colored white color temperature 3500-10000K. This blue LED is white, simple structure, low cost, mature technology and high, so the use of up.
Company Contact:
Contact Name: Fly
Company Name: Ledsion Lighting Technology Co., Ltd
Email:
Tel: 86 0755-27709196
Fax: 86 0755-27702889
Street Address: 3#, Guanlan Opto
Industrial Park, Baoan District,
Shenzhen, Guangdong, China
Member name: Ledsion
Country: China
Member Since: 30 June 2012
Total Leads: 71 Ledsion Import Export Business Leads
Business focus: Led Lights, China Led, Cree Led
Chat:
Verify: Safe Import Export Tips
converted directly into electricity for light. The heart of the LED is a semiconductor chip, the chip attached to one end on a bracket, one end is negative, the other end to connect the positive power supply so that the whole chip to be epoxy encapsulated. The semiconductor chip consists of two parts, the part of the P-type semiconductor, the dominant hole in it, the other end of the N-type semiconductor, here is mainly electronic. But when two semiconductor connected to form a PN junction between them. When the current through the wire to the chip, the electrons would be pushed to the P region in the P region electron-hole recombination, and then will be issued in the form of photon energy, which is the principle of LED light. The wavelength of light is the color of light is determined by the material to form a PN junction.
The initial LED as the light of the instructions of the instrumentation, then a variety of light-colored LEDs in traffic lights and a large area display a wide range of applications, resulting in a good economic and social benefits. To 12 inches of red traffic lights, for example, in the United States was long-lived, low-efficiency 140-watt incandescent lamp as a light source, it produces 2000 lumens of white light. The red filter, the light loss of 90%, leaving only 200 lumens of red light. In the light of the new design, Lumileds uses 18 red LED light source, including circuit losses, the total power consumption of 14 watts to produce the same luminous efficiency. The car lights are also an important area of the LED light source applications.
For general lighting, people need a white light source. 1998 white light LED development. The LED is packaged together to make the GaN chip and yttrium aluminum garnet (YAG). GaN chip of blue (λp = 465nm, yellow light shot Wd = 30nm), high-temperature sintering of YAG phosphors with Ce3 + by blue excitation peak 550nm. Blue LED substrate is installed in the reflective cavity bowl, covered with a mixture of YAG thin layer of resin, about 200-500nm. LED substrate issued by the blue part was absorbed by the phosphor, another part of the Blu-ray phosphors emit yellow mixed, can be too white. InGaN / YAG white LED by changing the YAG phosphor chemical composition and to adjust the thickness of the phosphor layer can be colored white color temperature 3500-10000K. This blue LED is white, simple structure, low cost, mature technology and high, so the use of up.
Company Contact:
Contact Name: Fly
Company Name: Ledsion Lighting Technology Co., Ltd
Email:
Tel: 86 0755-27709196
Fax: 86 0755-27702889
Street Address: 3#, Guanlan Opto
Industrial Park, Baoan District,
Shenzhen, Guangdong, China
Member name: Ledsion
Country:
ChinaMember Since: 30 June 2012
Total Leads: 71 Ledsion Import Export Business Leads
Business focus: Led Lights, China Led, Cree Led
Chat:
Verify: Safe Import Export Tips
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