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 …

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

Persistent room temperature phosphorescence (pRTP) is important to high-resolution
imaging independent of autofluorescence and the scattering of excitation light for security …

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 energy harvesting is among the best solutions for a global transition toward carbon-
neutral energy technologies. The existing solar energy harvesting technologies like …

The low quantum efficiency in the solid phase and the highly efficient quenching by oxygen
are two major weaknesses limiting the practical applications of triplet–triplet annihilation …

This perspective article provides a comprehensive but organized tutorial introduction of the
kinetics related to photon upconversion (UC) by triplet–triplet annihilation (TTA)(TTA-UC) …

The photon upconversion based on sensitized triplet–triplet annihilation (s TTA-UC) is a spin-
flip mechanism exploited to recover the energy stored on dark triplet states in conjugated …

In the last 15 years, the attention dedicated to organic conjugated systems experienced
outstanding growth because of the renewed interest in mechanisms involving triplet states …

Real-time visualization of assembly processes and sophisticated signal processing at the
nanoscale are two challenging topics in photonic nanomaterials. Here, high-quality light …