In 2015 QMC released their QDX™ class of rugged Cadmium-free quantum dots with the highest heat, oxidation and moisture resistance available industry-wide.
In September 2018, QMC announced it has developed a continuous flow manufacturing process to produce stable, low cost, high purity perovskite quantum dots (PQDs).
So they planned to incorporate the PQDs into QD infused films for solar and displays, but no mention of PQDs in QD-LEDs.
In November 2018, QMC announced that it has produced and extensively tested a 100% cadmium-free remote phosphor (or "on-chip") quantum dot LED technology that achieves an industry leading 91% Rec2020 color gamut coverage.
The original QD-LED testing is continuing on and no mention of switching to perovskites. Is the new green perovskite? Maybe, but why didn’t they also make a better red perovskite QD to achieve an even higher Rec2020 rating like the 98% that perovskites are capable of?
In Feb. 2019 the 10-Q states:
They made it a point that the solar cells are perovskite but did not indicate that the QD-LEDs are perovskite.
Did QMC license the QD-LEDs made with the old QDX QD technology to Amtronics and keep the better performing perovskite QD technology for themselves? I don’t think so.
I think that the perovskite QDs may not be tough enough to survive in the on-chip QD-LED environment, or at least there may have to be a further optimization and a new test program run to prove their capabilities under the harshest conditions.
For now, perovskites seem to be headed for use in thin films for solar cells and displays and not "ready to go" in QD-LEDs for displays and lighting.
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