Using light to control matter has captured the imagination of scientists for generations, as
there is an abundance of photons at our disposal. Yet delivering photons beyond the surface …

Organic materials that exhibit thermally activated delayed fluorescence (TADF) are an
attractive class of functional materials that have witnessed a booming development in recent …

Multiresonance thermal activated delayed fluorescence (MR-TADF) materials with an
efficient spin–flip transition between singlet and triplet excited states remain demanding …

Near-infrared-to-visible photon upconversion holds great promise for a diverse range of
applications. Current photosensitizers for triplet-fusion upconversion across this spectral …

Since the seminal report by Adachi and co-workers in 2012, there has been a veritable
explosion of interest in the design of thermally activated delayed fluorescence (TADF) …

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 …

Photon upconversion (UC), the process of combining two or more low-energy photons to
generate a higher-energy excited state, is of interest for applications ranging from imaging to …

Conspectus Photon upconversion based on triplet–triplet annihilation (TTA-UC) has
attracted much interest because of its possible applications to renewable energy production …

The spectral mismatch between solar cells and incident radiation is a fundamental factor
limiting their efficiencies. There exist materials and luminescent processes which can modify …

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 …