6533b827fe1ef96bd128662d
RESEARCH PRODUCT
Dipole reorientation and local density of optical states influence the emission of light-emittingelectrochemical cells
Antonio PertegásGabriel LozanoLaura Martínez-sartiHenk J. BolinkAlberto Jiménez-solanoHernán Míguezsubject
BrightnessMaterials sciencebusiness.industryAstrophysics::High Energy Astrophysical PhenomenaGeneral Physics and Astronomy02 engineering and technologyElectroluminescence010402 general chemistry021001 nanoscience & nanotechnology7. Clean energy01 natural sciences3. Good health0104 chemical sciencesElectrochemical cellLuminous fluxElectroquímicaDipoleAngular distributionOptoelectronicsPhysical and Theoretical Chemistry0210 nano-technologybusinessMaterialsdescription
Herein, we analyze the temporal evolution of the electroluminescence of light-emitting electrochemicalcells (LECs), a thin-film light-emitting device, in order to maximize the luminous power radiated bythese devices. A careful analysis of the spectral and angular distribution of the emission of LECsfabricated under the same experimental conditions allows describing the dynamics of the spatial regionfrom which LECs emit,i.e.the generation zone, as bias is applied. This effect is mediated by dipolereorientation within such an emissive region and its optical environment, since its spatial drift yields adifferent interplay between the intrinsic emission of the emitters and the local density of optical states ofthe system. Our results demonstrate that engineering the optical environment in thin-film light-emittingdevices is key to maximize their brightness
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2020-01-01 |