Research into the origin of GEBs
Instability of the emission of blue OLEDs based on bridged oligophenylenes

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IN169 V1 Research and innovation

Research into the origin of GEBs
Instability of the emission of blue OLEDs based on bridged oligophenylenes

Authors : Cyril PORIEL, Joëlle RAULT-BERTHELOT

Publication date: August 10, 2014 | Lire en français

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3. Research into the origin of GEBs

3.1 Observation of GEBs in photoluminescence (PL) spectra

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3.1.1 Excimer emissions

First of all, the community postulated that these GEBs were exclusively due to intermolecular π-π or CH-π interactions between π-conjugated fragments, resulting in spurious emissions linked in particular to stacking leading to the emission of excimers

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