Luminescence-based techniques continue to attract considerable attention due not only to
their current range of applications but also to their wide potential in the fields of optical …

Upconversion (UC) refers to nonlinear optical processes in which the sequential absorption
of two or more photons leads to the emission of light at shorter wavelength than the …

Luminescent materials, also called phosphors, are defined as solids that can absorb and
convert certain types of energy into radiation of light.(1) Among all kinds of phosphors, rare …

Lanthanide pairs, which can upconvert low energy photons into higher energy photons, are
promising for efficient upconversion emission. A typical system with Yb3+ as a sensitizer can …

Rare-earth upconversion nanophosphors (UCNPs), when excited by continuous-wave near-
infrared light, exhibit a unique narrow photoluminescence with higher energy. Such special …

The past decade has witnessed tremendous advances in synthesis of metal halide
perovskites and their use for a rich variety of optoelectronics applications. Metal halide …

Multifunctional lanthanide-based upconversion nanoparticles (UCNPs), which feature
efficiently convert low-energy photons into high-energy photons, have attracted …

Lanthanide-doped inorganic nanoparticles possess superior physicochemical features such
as long-lived luminescence, large antenna-generated Stokes or anti-Stokes shifts, narrow …

Lanthanide-doped upconversion nanoparticles (UCNPs) have attracted considerable
interest due to their superior physicochemical features, such as large anti-Stokes shifts, low …

Lanthanide-doped upconverting nanoparticles (UCNPs) have recently attracted enormous
attention in the field of biological imaging owing to their unique optical properties:(1) efficient …