Downscaling has long been a driving force of technical progress; Everything is getting smaller and smaller. Researchers at the University of Cambridge have achieved a breakthrough at LEDs in cooperation with the Zhejiang University in Hangzhou.
The smallest LEDs in the world are called Nano-PeledAnd are only 90 nanometers wide, such as the size of a typical virus. The researchers published their results in the journalNature.
The pixel density is 127,000 PPI.For comparison: a 27-inch gaming monitor with 4K resolution has a pixel density of only 163 ppi.
The smallest luminous emits in the world are made of perovskitwhich is already used in solar cells. The mineral consists of calcium, titanium and oxygen and has very good opto-electric properties and efficient load transport.
According to the Belgian research centerImec, Perowskit would act as a semiconductor in a Peled display and could lead to such panels process significantly higher electricity densities than, for example, OLEDs ().
"The reduction in electronic devices is a constant endeavor to scientists and engineers," says Professor Di Dawe, deputy director of the International Research Center for Advanced Photonics at the University of Zhejiang. The problem of previous LEDs is that the smaller they become. To put it simply, this fact is solved by perovskit.
Opportunity of Peleds
The size of the nano-Peleds are particularly interesting for VR glasses, since you can achieve a high pixel density on much smaller screens. This would significantly increase the resolution. There are also fields in medicine that could benefit from tiny displays, according to research
The tiny LEDs would not be used on televisions and monitors. However, the use of Perowskit could ultimately mean that larger displays experience a large quality boost.
Before the researchers used Nano-P. This corresponds approximately to the width of a human hair. The micro-peled prototype is crucial for the later commercialization of nano-peled technology.
