Passivation with a bifunctional fluorinated ligand stabilizes mixed-halide perovskite nanocrystals, enabling high-color-purity deep-blue emission (460–470 nm) in LEDs with improved efficiency and ...
Optical modes in a microcavity are tuned reliably over wide spectral ranges via boundary-shape deformations. The technique developed by Ren et al. promises seminal efficiency enhancement for nonlinear ...