Quantum Dot LED Milestone
American Cadmium Free Quantum Dot manufacturer Quantum Materials Corp has announced successfully surpassing the one year anniversary and exceeding 7000 hour continuous on-time durability test for the company's cadmium-free quantum dots in a remote LED application.
The successful implementation of quantum dots with LED's has been slow to progress primarily due to the challenge of achieving the requisite reliability and durability to survive the heat generation inside the LED package without suffering thermal quenching and rapid performance deterioration. The QD-LEDs were under continuous power at 2.5 Volts DC at 70mA and were measured initially, incrementally and at the 7000 hour mark with no measurable degradation of intensity, peak emission or FWHM, which is the measure for colour purity.
"Passing the One year (7000 hour) mark for continuous on time is a major achievement in proving our quantum dots and our encapsulation technologies can enable QD-LED's and the wide range of potential QD-LED applications. Through this development effort we have also made significant discoveries that have improved performance of our electroluminescent quantum dot materials, paving the way for next generation display and lighting applications. Our team continues to demonstrate the extraordinary accelerated discovery that can be accomplished using our patented continuous flow process. This patented technologies in the hands of our brilliant scientist keep Quantum Materials on the forefront of nanomaterial implementation and discovery," said Quantum Materials Corp president and CEO Stephen Squires.
Semiconductor quantum dots have attracted tremendous attention for their unique characteristics for solid state lighting and displays. The pure and tunable spectra of QDs make it possible to simultaneously achieve excellent color rendering properties and high luminous efficiency when combining colloidal QD's with light emitting diodes (LED's) or Micro LEDs.
"Exceeding 7000 hours of continuous illumination with zero degradation is an extraordinary accomplishment that can move the reality of true QD-LED technology one step closer to reality. It is even more so when you consider all our materials, regardless of whether they are prototype or production, are produced using our proprietary continuous flow production process enabling seamless scale-up to high volume production," said Toshi Ando, Quantum Materials Corp Senior Director of Business Development.