Near infrared (NIR) luminescent materials are an exciting playground for
telecommunications, biosciences and solar energy conversion. In particular, transition metal …

The ancient Egyptian blue pigment was developed over 5000 years ago and was used
extensively for around four millennia until its use mysteriously declined dramatically during …

Ultrafast time-resolved studies of photocatalytic thin films can provide a wealth of information
crucial for understanding and thereby improving the performance of these materials by …

The red afterglow of current rare-earth-activated long persistent luminescence (LPL)
phosphors is largely still less than 6 h, in contrast to the 20 or 30 h long blue-or green …

Imaging of complex (biological) samples in the near-infrared (NIR) is beneficial due to
reduced light scattering, absorption, phototoxicity, and autofluorescence. However, there are …

Phosphors used in NIR spectroscopy require broadband emission, high external quantum
yield, good ability, as well as a tunable spectral range to meet the detection criteria. Two …

The alkaline earth copper tetra-silicates, blue pigments, are interesting infrared phosphors.
The Ca, Sr, and Ba variants fluoresce in the near-infrared (NIR) at 909, 914, and 948 nm …

The dynamic development of photovoltaic and photo-sensitive electronic devices is
constantly stimulated by material and technological advances. One of the key concepts that …

The layered silicates Egyptian Blue (CaCuSi4O10, EB), Han Blue (BaCuSi4O10, HB) and
Han Purple (BaCuSi2O6, HP) are known as historic pigments, but they also possess novel …

The exceptionally high NIR photoluminescence of the ancient pigment Egyptian blue is due
to its very stable phase cuprorivaite (CaCuSi 4 O 10). This compound has recently attracted …