Abstract:A triplet–triplet pair is
a key intermediate in singlet
fission (SF), which has the potential to overcome the theoretical
limit of solar cell efficiency. Here, we report a new spectroscopy
to directly detect a short-lived triplet–triplet pair via the
effects of radio-wave (RF) irradiation near zero magnetic field at
room temperature. The fluorescence of polycrystalline powder of tetracene
is reduced by RF irradiation at zero field, which is caused by a quasi-static
RF field effect on spin mixing and electron-s… Show more
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