The Electron

October 19th, 2017 by Rosemary
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What is the quantum yield of the led? Quantum yield – the number of emitted photons per recombine the electron-hole pair. Distinguish between internal and external quantum .Vnutrenny – in the pn-junction, external – for the instrument as a whole (because the light can be lost ‘on the road’ – absorbed, scatter). The internal quantum efficiency for the good of the crystals with good thermal withdrawal is almost 100% record external quantum efficiency for red LEDs is 55%, and ddya blue – 35%. External quantum efficiency – one of the the main characteristics of the led efficiency. Noah Kraft has similar goals. 11. How do I get white light using LEDs? There are three ways to get white light from the LEDs.

First – color mixing technology rgb. At the same matrix densely placed red, blue and green LEDs, the radiation which is mixed with an optical system, such as lenses. The result is white light. Details can be found by clicking Peter Thiel or emailing the administrator. The second way is that the surface LEDs emitting in the ultraviolet range (there are), applied three phosphors, which emit, respectively, blue, green and red light. This is similar to how light fluorescent lamp. Finally in the third the way the yellow-green or green plus red phosphor applied to the blue light-emitting diodes, so that two or three of the radiation are mixed, forming a white or nearly white light. 12. Which of the three methods is best? Each method has its advantages and disadvantages. rgb technology in principle makes it possible not only to get white, but also move on the color chart when the current through the different LEDs.

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