Samsung Electronics Develops Industry-leading Blue QLED Technology
Samsung Advanced Institute of Technology (SAIT), Samsung’s R&D hub dedicated to cutting-edge future technologies has secured industry-leading cadmium-free blue Quantum Dot light-emitting diodes (QLEDs) performance.
Since blue is known to be the most difficult color to implement out of the three primary QLED colors (red, blue and green), this achievement – coming in the wake of Samsung’s development of red QLED technology last November – once again proves Samsung’s excellence in the quantum dot technology sphere.
Blue Proves the Most Difficult of the Three Primary QLED Colors
Quantum dots (QDs) are semiconductor particles that measure a few nanometers in diameter (tens of thousands of times narrower than a single human hair). When illuminated, they re-emit light of a certain color depending on their size.
The blue QD, which has the largest band gap1 among the three primary colors, rapidly oxidizes upon exposure to external light, resulting in a short lifespan and low luminous efficiency.2 For this reason, up to now the industry had failed to develop even the technology required for blue quantum dot light-emitting diodes.
Overcoming Another Challenge by Developing Blue QLED Technology
But now, SAIT has successfully developed blue QLED technology, achieving industry-leading results such as 20.2% improved luminous efficiency, 88,900 nits of maximum luminance and 16,000 hours of QLED lifetime (measured at half-brightness for 100-nit luminance). These results were recorded in a study titled “Efficient and stable blue quantum dot light-emitting diode”, which was published by the journal Nature on October 14, 2020.
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