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 …

Ever since the beginning of this century, many kinds of materials have been reported to
demonstrate colossal permittivity (CP) or a colossal dielectric constant exceeding 103 …

Upconversion luminescence (UCL) refers to nonlinear optical processes, which can convert
near-infrared photons to short-wavelength emission. Recent advances in nanotechnology …

Piezoelectric and ferroelectric materials have shown great potential for control of the optical
process in emerging materials. There are three ways for them to impact on the optical …

Luminescent ions doped materials have been widely applied in many areas, both scientific
research and practical fields. Recently, incorporating luminescent ions and advanced …

During the past decades, atomically thin, two-dimensional (2D) layered materials have been
intriguing researchers for both fundamental study and practical applications, because of …

Optical temperature sensing properties based on upconversion emission of Er-doped 0.5 Ba
(Zr 0.2 Ti 0.8) O 3-0.5 (Ba 0.7 Ca 0.3) TiO 3 ferroelectric ceramics are reported. The …

Upconversion emissions of Er-doped and Er/Yb-codoped Na 0.5 Bi 0.5 TiO 3 have been
studied. Under 980 nm excitation, all samples exhibit strong green and red upconversion …

Hybrid organic-inorganic metal halides (HOMHs) have attracted tremendous interest in the
past decades due to their diverse functional properties, such as ferroelectricity and …

Tuning the luminescence of phosphors is extremely important in controlling and processing
light for active components of light sources, optical sensing, display devices, and …