TiO2, as a benchmark in the field of ultraviolet photocatalysis, is one of the most widely used
semiconductor photocatalysts. However, its inherent drawbacks, including wide bandgap …

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 nanoparticles (UCNPs) with hollow structures exhibit many fascinating optical
properties due to their special morphology. However, there are few reports on the …

Theranostics is a concept of integrating imaging and therapy into a single platform for use in
the next generation of personalized medicine to meet the challenges in modern health …

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 …

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 …

The enthusiasm for research on lanthanide‐doped upconversion nanoparticles is driven by
both a fundamental interest in the optical properties of lanthanides embedded in different …

Over the past decade, high-quality lanthanide doped upconverting nanoparticles (UCNPs)
have been successfully synthesized with the rapid development of nanotechnology. Due to …

The near‐infrared (NIR) region of the spectrum is called the “therapeutic window” because
NIR light can penetrate deeply into tissue. Therefore, NIR‐sensitive materials are attractive …

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