Nondestructive photolithography patterning colloidal quantum dots enables ultrahigh-resolution displays without damaging QD surface chemistry

https://www.eurekalert.org/news-releases/1110787

"emissive layer of QDs, hole-transport polymer, UV-activated crosslinker... no harsh chemicals/ photoresists degrading performance... UV triggers polymer to form network locking QDs in place, patterns develop using simple solvent, bypassing destructive ligand exchanges... >10K (single color)/ 1K ppi (full RGB) pixel density, 1.7X increased external quantum efficiency, nearly 3X device lifetime... of the device. scalable:  demonstrated on  4" wafer... AR, VR, smart glasses, optoelectronic chips"