What They Say
A group from the Beijing Institute of Technology has published a paper in Nano Research that was summarised in Eurekalert on work it has done to develop perovskite quantum dot microarrays for colour conversion. (it’s also available for download here) The QDs were applied with inkjet printing (IJP) and then subject to photopolymerisation. The process created pixels with a size of 20 microns separated by black photoresist moulds and that structure allows thicker pixels and less optical crosstalk than purely inkjet printed displays which can suffer from ‘puddle’ or ‘coffee ring’ effects.
The fabricated PQDs microarrays exhibit characteristics that are desirable for QDCC applications, including 3D morphology with hemisphere shape and strong photoluminescence. These microarrays achieved strong and uniform photoluminescence in large area because of the seamless integration with in situ-fabricated PQDs
What We Think
This made me think of the ideas from Applied Materials that we heard about last year. (Applied Materials Overcomes Some Challenges in MicroLED for VR) That idea used UV LEDs to limit the bleed of blue into the other colours which can reduce the chromaticity range. (BR)
