Even a few years ago, the most advanced LED displays were amazing compared to the existing screen panels on the market. Now, an engineer at Princeton University has discovered an inexpensive way to make LEDs that, while cost-effective, can make panels brighter, more efficient, longer, and even more than five times sharper.

In 2012, Professor Stephen Chou of Princeton University was known for his breakthroughs in nanotechnology and his achievements in improving the energy efficiency of solar cells by 175%. Now, he put the same principle on LED technology. “From a physical point of view, a good light absorber, such as our solar cell, should also be a good illuminator,” Chou wrote in the article. “We want to prove in experiments that this is true in the visible range. And then use it to solve important challenges in LEDs and displays."

A new breakthrough in LED technology can increase clarity by 400%

Since the invention of LED, scientists have been fighting this so-called important challenge. Although the LED is extremely energy efficient, it actually emits only 2%-4% of the total amount of light generated, and the rest is trapped in the LED casing, just like the light is trapped in the water of the swimming pool.

Chou's nanotechnology has changed this. This technology uses a nanostructure that directs and focuses the light toward the viewer. It is basically a network of only 15 nanometers thick, through which the illuminated surface at the bottom emits brighter light. Since the light and heat that are trapped are reduced, the life of the LED is also prolonged.

This is a very cheap way for the production of organic and inorganic LEDs. Chou and Princeton are currently waiting for their patent application to pass, and after that, we may not see how long it will be used on smartphones.

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