CFL VS LED?
Who is the winner?
Well, for starters, both the technologies use different mechanisms for the emission of light. In some cases, CFL will entice you while in others LED is the winner. However, before deciding, let’s have a look at what exactly these optical devices are!
CFL LAMPS- WHITE, FLUORESCENT BULBS
CFL or Compact Fluorescent Bulbs are basedon the principle of fluorescence. The gas filled in the hollow glass tube of the lamps is mercury. When electricity is passedthrough the gas, it ionizes the valence electrons of the mercury ions, andthey jump to the higher energy levels.
When they jump back to their original energy level, they release energy in the form of ultraviolet radiations. The fluorescent coating on the inner side of the bulb helps to convert the UV rays into that of visible light.
The electricity is mainly generatedin the electromagnetic ballast located below the gas-filled tube. The glass of the lamps is made up of phosphor, a synthetic fluorescent, which emits white light when high energetic electrons strike its surface.
LED LAMPS- A DIODE TECHNOLOGY
LED or Light Emitting Diode is where a heavily doped p-n junction diode is usedin the forward biased mode for the emission of light. It works on the concept of electron-hole recombination where the light is emittedwith a frequency equal to the band gap energy of the diode.
LEDs use the concept of semiconductors, andthat is why it comes in a wide range of colors and materials as well. One of the best examples where you can see the different colored LED sign applications is in the traffic lights.
ADVANTAGES OF LED OVER CFL
Let’s have a glance at why LEDs are worth your time and money!
- Lifetime of Illumination
Have you ever taken a close look at the LED display of your phone or TV? If yes, you will see that the light emitted from the display remains the same throughout the time of usage. It barely falters and thus it’s illumination power is commendable. On the other hand, considering the CFLs, its lifetime is only for 10000 hours after which its illumination decreases to 70%.
- 2.Variations in the Device
CFL lamps are of two types- integrated and non-integrated lamps. Thisis mainly basedon the placement of the ballast in the device. It comes only in white color. However, considering a LED light, you will have a wide range of spectral colors belonging to UV, visible, and IR spectrums. Also, LEDs are made up of different materials like organic LED, inorganic LED, phosphor LED, and so on.
LEDs are environment-friendly as they hardly require replacement and they also do not contain any harmful material. On the other hand, CFLs require frequent replacements,andthey contain mercury, which is quite harmful to humans.
LED screen is now widely being usedin different electronic items, andslowly the device is replacing the CFLs. The efficiency and contribution of LED to the lighting world aremarvelousand incredible. It has found wide applications in various sectors including communication. So, maybe it is the time to use these lights over CFL. What do you think?