Solar energy is an ample renewable energy resource, with photovoltaic (PV) technology
enabling a direct route from light to electricity. Currently, PVs are limited in photon …

The energy transition from fossil fuels to renewables is already ongoing, but it will be a long
and difficult process because the energy system is a gigantic and complex machine. Key …

Singlet fission, in which two triplet excitons are generated from a single absorbed photon, is
a key third-generation solar cell concept. Conservation of angular momentum requires that …

Due to its ability to offset thermalization losses in photoharvesting systems, singlet fission
has become a topic of research interest. During singlet fission, a high energy spin-singlet …

The quintet triplet-pair state may be generated upon singlet fission and is a critical
intermediate that dictates the fate of excitons, which can be exploited for photovoltaics …

Triplet–triplet annihilation upconversion (TTA-UC) has great potential to significantly
improve the light harvesting capabilities of photovoltaic cells and is also sought after for …

Photochemical upconversion is a process whereby two lower-energy photons are converted
into a higher-energy photon by sensitized triplet–triplet annihilation. While recent interest in …

To improve the efficiency of photon upconversion, a hybrid approach of combining organic
dyes and inorganic nanoparticles is proving successful, especially in the form of dye …

Singlet fission is a process whereby two triplet excitons can be produced from one photon,
potentially increasing the efficiency of photovoltaic devices. Endothermic singlet fission is …

We have designed a series of pentacene dimers separated by homoconjugated or
nonconjugated bridges that exhibit fast and efficient intramolecular singlet exciton fission …