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

Perovskite-sensitized triplet–triplet annihilation (TTA) upconversion (UC) holds potential for
practical applications of solid-state UC ranging from photovoltaics to sensing and imaging …

Upconverting infrared light into visible light via the triplet-triplet annihilation process in solid
state is important for various applications including photovoltaics, photodetection, and …

Triplet energy transfer from colloidal nanocrystals is a novel approach to sensitizing
molecular triplets that are important for many applications. Recent studies suggest that this …

Photon upconversion via triplet–triplet annihilation has the potential to improve the
performance of photovoltaics, as additional sub-bandgap photons can be harnessed …

Triplet sensitization of rubrene by bulk lead halide perovskites has recently resulted in
efficient infrared-to-visible photon upconversion via triplet–triplet annihilation. Notably, this …

The limited solar spectrum utilization hinders the further amelioration of the performance of
perovskite solar cells (PVSCs). An up-conversion (UC) process extends the spectral …

Photon upconversion via triplet–triplet annihilation (TTAUC) converts two low-energy triplet
excitons into high-energy photon emission from a singlet. Hybrid TTAUC systems integrating …

An approximately monochromatic red upconversion (UC) emission is successfully realized
in NaScF 4: Yb 3+/Er 3+ nanoparticles (NPs) through Mn 2+ ions doping without phase …

Triplet–triplet annihilation‐based photon upconversion (TTA‐UC) can efficiently generate
higher energy photons at low relative fluences. Bulk metal halide perovskites have offered …