Impurity doping is a promising method to impart new properties to various materials. Due to
their unique optical, magnetic, and electrical properties, rare-earth ions have been …

Lanthanide-based upconversion nanomaterials have recently attracted considerable
attention in both fundamental research and various frontier applications owing to their …

Core–shell nanostructures have received widespread attention because of their potential
usage in various technological and scientific fields. However, they still face significant …

The attractive features of lanthanide-doped upconversion luminescence (UCL), such as high
photostability, nonphotobleaching or photoblinking, and large anti-Stokes shift, have shown …

Single-atom catalysts (SACs) are advantageous because every active atom is exposed at
the surface, ensuring maximum utilization of catalytically active metals. To optimize the …

External manipulation of emission colour is of significance for scientific research and
applications, however, the general stimulus-responsive colour modulation method requires …

Lanthanide-doped upconversion nanoparticles (UCNPs) are capable of converting near-
infra-red excitation into visible and ultraviolet emission. Their unique optical properties have …

Optical nanomaterials have been widely used in anticounterfeiting applications. There have
been significant developments powered by recent advances in material science, printing …

Upconversion is a nonlinear optical phenomenon that involves the emission of high‐energy
photons by sequential absorption of two or more low‐energy excitation photons. Due to their …

The synthesis of lanthanide-activated phosphors is pertinent to many emerging applications,
ranging from high-resolution luminescence imaging to next-generation volumetric full-color …