Cancer accounted for 7.6 million deaths (around 13% of all deaths) worldwide in 2008.(1)
Almost 13 million cancer cases are newly diagnosed every year, and deaths are projected to …

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 …

Frequency conversion has always been an important topic in optics. Nonlinear optics has
traditionally focused on frequency conversion based on nonlinear susceptibility but with the …

Upconversion, the conversion of photons from lower to higher energies, is a process that
promises applications ranging from high-efficiency photovoltaic and photocatalytic cells to …

With abundant energy levels of 4f electron configurations, trivalent lanthanide ions (Ln3+)
are endowed with unique and fascinating luminescent properties. Inheriting the native …

The effective use of sunlight by photocatalyst systems is challenging. Here, we report an
active-core@ inert-shell nanohybrid composite that converts incompatible near-infrared …

The temperature-dependent upconversion luminescence of NaYF4: Yb: Er nanoparticles
(UCNP) containing different contents of Gd3+ as additional dopant was characterized. The …

Enhancement of upconversion luminescence is imperative for the applications of
upconversion nanocrystals (UCNs). In this work, we investigated the upconversion …

Upconversion nanocrystals have many advantages over other fluorescent materials.
However, their upconversion luminescence intensities are not desirable, limiting their …