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 …

Triplet–triplet annihilation (TTA) up‐conversion is an effective way to utilize triplet excitons in
organic light‐emitting diodes (OLEDs). However, the parameters characterizing the triplet …

Thienyl-substituted BODIPY derivatives were prepared as organic triplet photosensitizers for
triplet–triplet annihilation (TTA) upconversion. The photophysical properties of the …

Triplet–triplet upconversion, in which two triplet excitons are converted to one singlet
exciton, is a well-known approach to exceed the limit of electroluminescence quantum …

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 …

Recently, triplet harvesting via a thermally activated delayed fluorescence (TADF) process
has been established as a realistic route for obtaining ultimate internal electroluminescence …

Triplet–triplet annihilation upconversion (TTA-UC) is an unconventional photophysical
process that yields high-energy photons from low-energy incident light and offers pathways …

The harvesting of 'hot'triplet excitons through high-lying reverse intersystem crossing
mechanism has emerged as a hot research issue in the field of organic light-emitting diodes …

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 …

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 …