Recombination of two triplet excitons in conjugated polymers

Dynamic recombination of triplet excitons in polymer heterojunctions*

“…[10][11][12] Therefore, this reaction can greatly enhance the quantum EL efficiency. Meanwhile, it can be found that the total yield of emissive species in the heterojunction structure is higher than 117101-4 that in two similar coupling chains, [13] so the heterojunction structure is beneficial to the generation of luminous composite states via the triplet exciton-triplet exciton reaction and consequently is conducive to improving the efficiency of EL.…”

“…To clarify this point, we previously investigated the scattering and recombination of two triplet excitons and found that the excited polaron is the main luminous product in such a recombination process. [13] Over the past few decades, heterojunctions created from thin films of two dissimilar organic semiconductor materials have been widely used to make high efficient organic light emitting diode displays and lighting systems and small molecules or polymer-based organic photovoltaic technologies. [14] For example, in order to balance the injection of holes and electrons, real PLEDs often have a multi-layer structure with a hole transporting layer (HTL) and an electron transporting layer (ETL) inserted into the PLED.…”

Hydrofluoric acid corrosion behaviour of SiO2glass used to prepare glass hollow fibre membrane

“…Compared to organic hollow fibre membrane, inorganic membrane exhibits various kinds of excellent properties, which include stability in organic solvent,1 durability at high temperature,2,3 resistance to compaction under high pressure4 and easy shaping ability 5. Owing to the chemical, thermal and mechanical stabilities, the inorganic hollow fibre membrane is mainly used as desalination membrane,6 mixed gas separation membrane,7 – 9 catalyst support10 and enzyme immobilisation matrix 11…”