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RESEARCH PRODUCT
Dynamic doping and degradation in sandwich-type light-emitting electrochemical cells
Albrecht WinnackerSebastian MeierSebastian MeierDaniel TorderaWiebke SarfertD. HartmannHenk J. Bolinksubject
PhotoluminescenceMaterials scienceTransition metalChemical engineeringDopingAnalytical chemistryGeneral Physics and AstronomyIonic bondingDegradation (geology)Physical and Theoretical ChemistrySpectroscopyLayer (electronics)Electrochemical celldescription
Photoluminescence spectroscopy has been performed in situ during device operation and after switch-off on ionic transition metal complex (iTMC)-based sandwich-type light-emitting electrochemical cells (LECs). It is demonstrated that the photoluminescence of the LECs decreases with increasing operating time. For operating times up to three hours the decline in photoluminescence is fully recoverable after switching off the bias. These results imply that doping of the iTMC layer is responsible, not only, for the turn-on of LECs but also for their lifetimes.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2012-07-10 | Physical Chemistry Chemical Physics |