What is the degradation of LEDs? Can the brightness of LEDs (light-emitting diodes) be decreased during the working period?

What is the degradation of LEDs? Can a light-emitting diodes to decrease the flux in the operation?
First, the semiconductor crystal is the basis of the LED. This crystal, when passing through it, given the current radiates a certain amount of light energy. To convert this light energy to the desired radiation (eg white light) - uses phosphor (the phosphor is applied to the crystal, then all this korpusiruetsya and get ready LED with a white light).
At the present time - is the most advanced technology, which is constantly being improved. The only way to get this batch quality light for mass application.
Yes, the phosphor as well as all materials have some small factor of aging.
If improper operation of LEDs, such as: a significant excess of the nominal current or abnormal current jumps, and the excess of operating temperatures - indeed there is a rapid aging of the phosphor and burnout.
However, with proper operation - phosphor has low coefficient of aging, and does not burn. He can run all the amount of time specified in the specifications.
And this story is the most modern and efficient now.
Therefore, we apply the stabilization of the basic parameters of LEDs, and provide nominal clamp operation modes. Therefore, we use high-quality power supplies that meet all the criteria of stability.
Yes, the quality of the phosphor is indeed one of the important indicators. You correctly noticed it.
 
Secondly, the quality of the phosphor as one of the major indicators of the quality indicator - is constantly monitored. This multi-grained control - at all stages of production: from receipt of blending, coating,-packaging.
We have chosen for our products the best LEDs, with quality phosphor. They are multi-stage control, and only then act on the production for the installation and subsequent assembly fixtures.
 
Thirdly, we are constantly watching all the changes and innovations in the technology of LEDs. And so we can offer you the latest technology products. And as soon as any modern technology, be assured we will give them to you in the form of our products. 

SVETOREZERV LED lighting company (led manufacture, led supplier)
LED street light, led street lighting, led street lamp	Led light, Led lights, Led fixture, led indoor light	LED Flood light, led projector, led fixtures	Led down light, LED home lighting, led fixture	Led tube T8 lamps on smd leds, LED T5, led tube light	LED E27 lamp, LED E20 lampLED lamps, led E14 lamp.
LED panel 600*600, led panel 300*300, led panel 1200*300, led light panel	LED wall washer, led wall light, high power led wall washer	LED wall lamp, led wall lamp, led night light	LED high power lamps, 1W Led lamp, 3W led lamp, 5W led lamp, 7W led lap, 12W led lamp	LED PAR lamps, LED par 30, led par 38, led par 64	LED bulb lamps, led bulbs, led light bulbs, led spot light