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 …

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 …

Triplet–triplet annihilation photon upconversion (TTA-UC) is a process in which triplet
excitons combine to form emissive singlets and holds great promise in biological …

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 …

The ability to upconvert two low energy photons into one high energy photon has potential
applications in solar energy, biological imaging, and data storage. In this Letter, CdSe and …

Photon upconversion, the process wherein light of long wavelength is frequency converted
to photons of higher energy, is readily achieved at low incident power through sensitized …

The development of cyclometalated Ir (III) complexes has enabled important breakthroughs
in electroluminescence because such complexes permit the efficient population of triplet …

Triplet–triplet annihilation (TTA) is a promising upconversion approach due to its low
excitation power density (solar light is sufficient), high upconversion quantum yield, readily …

Novel approaches to modify the spectral output of the sun have seen a surge in interest
recently, with triplet–triplet annihilation driven photon upconversion (TTA-UC) gaining …

In the last few years, non-coherent sensitized photon up-conversion (SUC) in multi-
component systems has been developed to achieve significantly high quantum yields for …