6533b7d4fe1ef96bd1263454
RESEARCH PRODUCT
Self-absorption in a light-emitting electrochemical cell based on an ionic transition metal complex
Nikolai KaihovirtaGiulia LongoHenk J. BolinkLudvig EdmanLidón Gil-escrigsubject
PhotoluminescenceMaterials sciencePhysics and Astronomy (miscellaneous)F300Inorganic chemistryDopingfungiIonic bondingF50002 engineering and technology010402 general chemistry021001 nanoscience & nanotechnology01 natural sciences0104 chemical sciencesElectrochemical cellTransition metalPhysical SciencesFysikSelf-absorptionLight-emitting electrochemical cellsense organs0210 nano-technologydescription
We report on the quantitative and qualitative effects of self-absorption in light-emitting electrochemical cells (LECs) based on ionic transition metal complexes (iTMCs), as measured in-situ during electric driving. A yellow-emitting iTMC-LEC comprising an active material thickness of 95 nm suffers a 4% loss of the emission intensity to self-absorption, whereas the same type of device but with a larger active-material thickness of 1 mu m will lose a significant 40% of the light intensity. We also find that the LEC-specific effect of doping-induced self-absorption can result in a drift of the emission spectrum with time for iTMC-LECs, but note that the overall magnitude of doping-induced self-absorption is much smaller than for conjugated-polymer LECs.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2015-03-09 |