An international collaboration between several university around the world has led to an innovation in light-emitting diode that could potentially result in a giant leap forward when it comes to increase the resolution on TV CRT screen and mobile devices . For the first metre ever , asingle light-emitting diode can now change colorall by itself .
The current design and chemical makeup of LEDs limit the technology to producing visible light in just a single color . “ But Andrew , what about my color - changing lead wise lightbulb , ” you ’re probably asking . Those actually rely on a cluster of LED inside that each produce either red , green , or risque light . When their case-by-case intensities are adjust , the colors that each light farm mix to get an overall shade of light . LED - backlit LCD TVs oeuvre in a similar fashion , but to produce one - colored pixel , three filtered light-emitting diode are required . Even the next big find in flatscreen tv set technology , MicroLEDs , ask a trio of ultra - tiny light - producing diodes to create a unmarried picture element , which limits how many can be squeezed into a give orbit , and closure .
In a paper recently published to theACS Photonics Journal , researchers from Lehigh University and West Chester University in Pennsylvania , Osaka University in Japan , and the University of Amsterdam , detail a new approach to making LEDs that uses a rare globe ion call Europium that when pair with Gallium Nitride ( an alternative to Si that ’s now showing up in electronics other than LEDs , likeAnker ’s impossibly petite PowerPort Atom PD 1laptop courser ) allows the LED ’s color to be adjusted on the fly sheet . The mystical sauce is how power is used to excite the Europium and Gallium Nitride - different ratios and intensities of current can be selectively use to produce the emission of three primary colors : red , blue , and green .
Image: (ACS Photonics Journal)
Using this coming , LED lightbulbs with specific color temperatures could be bring out and betray at much cheaper price points since the colors from multiple tint - specific light-emitting diode do n’t have to be interracial . The technology could yield similar benefits for TVs and the cover that end up in peregrine devices . or else of three LED ( red , green , and blueish ) needed to generate every pel , a unmarried atomic number 63 - based LED could do the occupation . Even more exciting than cheaper toll tags is the fact that exchange three light-emitting diode with just one could result in a presentation with three time the solving . Your eyes probably would n’t be able to discern that many pixels on a smartphone screen , but in small displays , like those used in the view finder of digital photographic camera , a significant step in resolving power would be a noticeable improvement .
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