Grown large-area, high-purity single crystals boost OLED display light extraction/ efficiency, and tackles light-outcoupling losses
https://www.eurekalert.org/news-releases/1137326 "polycrystalline micro-OLED backplane thin films exhibit charge-carrier trapping, wafer-scale defect density, thermal dissipation at grain boundaries, limiting photoluminescence quantum yields, efficiency, long-term stability... overcome suppressing grain boundary defects across multi-cm scales, enhancing charge mobility/ reducing non-radiative recombination losses/ driving voltages... integrable into existing display backplanes... high-resolution, long-lifespan: AR/VR hardware, premium flat-panel displays"