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 …

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

Lanthanide-doped upconversion nanoparticles (UCNPs) have aroused extraordinary
interest due to the unique physical and chemical properties. Combining UCNPs with other …

The pseudo-two-dimensional (2D) morphology of plate-like metal nanoparticles makes them
one of the most anisotropic, mechanistically understood, and tunable structures available …

Upconversion luminescence is characterized by the conversion of near-infrared excitation
into ultraviolet and visible emissions through a special class of doped optical materials …

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

Photodynamic therapy (PDT) has been applied to treat a wide range of medical conditions,
including wet age-related macular degeneration psoriasis, atherosclerosis, viral infection …

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 …

Light is a particularly appealing tool for on‐demand drug delivery due to its noninvasive
nature, ease of application, and exquisite temporal and spatial control. Great progress is …