NewsMultidimensional coherent spectroscopy reveals triplet state
coherences in cesium lead-halide perovskite nanocrystals

19th January 2021by admin0
https://nfusion-tech.com/wp-content/uploads/2021/01/multidimensional-coherent-spectroscopy-reveals-triplet-statecoherences-in-cesium-lead-halide-perovskite-nanocrystals_6007fdd45deb7.jpeg

Advanced optoelectronics require materials with newly
engineered characteristics. Examples include a class of materials
named metal-halide perovskites that have tremendous significance to
form perovskite solar cells with photovoltaic efficiencies. Recent
advances have also applied perovskite nanocrystals in
light-emitting devices. The unusually efficient light emission of
cesium lead-halide perovskite may be due to a unique excitonic fine
structure made of three bright triplet states that minimally
interact with a proximal dark singlet state. Excitons are
electronic excitations responsible for the emissive properties of
nanostructured semiconductors, where the lowest-energy excitonic
state is expected to be long lived and hence poorly emitting (or
‘dark’).

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    The New Fusion technology is based on a phenomenon called triplet-triplet annihilation (TTA) which is a process in which two triplet excitons annihilate and produce a higher energy singlet exciton.

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      New Fusion

      The New Fusion technology is based on a phenomenon called triplet-triplet annihilation (TTA) which is a process in which two triplet excitons annihilate and produce a higher energy singlet exciton.

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