HomePhysicsOPTICS & PHOTONICSResearchers are creating cheaper LED bulbs

Researchers are creating cheaper LED bulbs

We all are aware about the fact that how electrical light bulbs with filaments has started a revolution at our homes and work places by replacing age old fires and candles. As that revolution progressed, we have now arrived at a juncture where we use light emitting diode or LED bulbs. But researchers have started a quest to give the world better LED bulbs.

LED bulbs reduce the lighting bill and they last many times longer than any other options. These bulbs can be focused and it doesn’t get hot so easily. These bulbs also work well in battery-powered lanterns.

But apart from these qualities LED bulbs are still expensive to a huge number of people around the globe. If only the price of the bulbs can be reduced and it lasts for a much longer period then more people will be able to access LED bulbs.

Researchers from University of Johannesburg have taken an initiative to make a light-emitting material for LEDs which will help it to shine brighter and last longer.

Researchers has already shown us by adding a common compound to a safe light-emitting material will create brighter light in LEDs. They have added sulphate to cerium-doped zinc oxide to intensify the light.

Zinc oxide has already been used in many electronic devices and sulphate helps in laser excitation.

But researchers have also said that light emitting material is still in its way to be as effective as commercial LED bulbs.

Cerium-doped zinc oxide emit different colours of light when a laser is shone into it. The material emits red or blue or green light with a single energy source, which is called chromaticity. This is one of the most important property of cheap LED lights.

Cerium-doped zinc oxide is also able to emit white light in the same way of emitting red or blue or green light. This has made this material a good candidate for future LED.

Researches have also added that testing light-emitting materials in the laboratory can lead the lab to caught fire. But zinc oxide and sulphate on the other hand, don’t explode or caught fire. They are also environment friendly and extremely economical.


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