Full-color-emitting upconversion nanoparticles with core@multi-shell structure for color displays with ultra-high color reproducibility

https://www.eurekalert.org/news-releases/1079407

"RGB at different excitation wavelengths (core emits green, inner shell red, outer shell blue) from single nanoparticle by absorbing/ adjusting 3 near-IR wavelengths, for glasses-free displays without eye fatigue... overcomes low brightness/ limited color reproduction range due to narrow color gamut... high color purity/ strong luminescence intensity... 94.2% wide color gamut of NTSC color space, 133% of sRGB color space... future: transparent upconversion nanoparticle- polymer composites to display various color images"