Organic semiconductor materials have been widely used in various optoelectronic devices
due to their rich optical and/or electrical properties, which are highly related to their excited …

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 …

Abstract Ultraviolet (UV, λ< 400 nm) light is essential for various photochemical reactions,
but its intensity in the solar spectrum is very low, and light sources that artificially generate …

All photovoltaic solar cells transmit photons with energies below the absorption threshold
(bandgap) of the absorber material, which are therefore usually lost for the purpose of solar …

Lanthanide-doped upconversion nanoparticles hold promises for bioimaging, solar cells,
and volumetric displays. However, their emission brightness and excitation wavelength …

Many applications, including solar energy conversion, can be enhanced by the
upconversion of low energy photons. A flexible approach towards achieving this is by …

Photon upconversion through sensitized Triplet–Triplet Annihilation (TTA-UC) has regained
a lot of interest during the last decade mainly due to its potential for significantly increased …

Triplet–triplet annihilation upconversion (TTA-UC) has been attracting attention in various
fields as a promising tool to efficiently generate a shorter-wavelength photon than incident …

Solar power production and solar energy storage are important research areas for
development of technologies that can facilitate a transition to a future society independent of …

Photon upconversion (UC) from near‐infrared (NIR) light to visible light has enabled
optogenetic manipulations in deep tissues. However, materials for NIR optogenetics have …