Proceedings of nanoGe Fall Meeting 2021 (NFM21)
DOI: https://doi.org/10.29363/nanoge.nfm.2021.200
Publication date: 23rd September 2021
Light emitting materials are nowadays important in various applications and for many of them the development of graftable POOH emissive organic molecules combined with inorganic nanoparticle have opened new opportunities for future technologies. A possible way to enhance the emission of organic fluorophores and to control the size of solution-processable nanoparticles at the same time is their co-grafting with Oleic acid onto inorganic nanoparticle surfaces. In order to avoid the classical aggregation-caused quenching effect when high concentrations of organic ligands are present on nanoparticle surface, the opposite effect, namely aggregation-induced emission is a promising approach to generate strong light emission. Indeed, in this case, the high concentration helps to freeze the motion of the molecules to reduce the non-radiative deactivations. However, even though this new nanohybrid materials show strong emission, their solution-processing remains challenging and morphology control as nanoparticles suffer from large distributions over size and shape. Therefore to go towards efficient reproductible devices the transport and morphology limitations related to nanohybrids have to be controled. In this work we thus present the incorporation of nanohybrids in polymer host matrix PVK and oxadiazole. In order to have efficient LED devices, but also to control the emitted light by changing the organic part. By the co-grafting of different organic emitters on the nanoparticle surface we target to reach the white display on LED device.
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