OLED Papers 2019. Oct. 15.

Triplet-triplet annihilation effects in rubrene/C60 OLEDs with electroluminescence turn-on breaking the thermodynamic limit.

Nat Commun. 2019 Oct 15;10(1):4683

Authors: Qiao X, Ma D

WhoQiao X et al.
When2019 Oct 15
What The calculation of the Voc can be used to determine whether a new mechanism is involved or not.
Why Engmann et al. experimentally and theoretically examined the higher-order effects in rubrene/C60 organic light-emitting diodes (OLEDs), claiming that triplet-triplet annihilation is not responsible for the electroluminescence with extremely-low turn-on voltage.
How Direct singlet formation on rubrene and direct band-to-band recombination seems impossible to be accountable for such low Voc.


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