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Organic radicals have been of interest due to their potential to replace nonradical‐based organic emitters, especially for deep‐red/near‐infrared (NIR) electroluminescence (EL), based on the spin‐allowed doublet fluorescence. However, the performance of the radical‐based EL devices is limited by low carrier mobility which causes a large efficiency roll‐off at high current densities. Here, highly efficient...
Semiconductor quantum dots (QDs) are among the most promising next‐generation optoelectronic materials. QDs are generally obtained through either epitaxial or colloidal growth and carry the promise for solution‐processed high‐performance optoelectronic devices such as light‐emitting diodes (LEDs), solar cells, etc. Herein, a straightforward approach to synthesize perovskite QDs and demonstrate their...
We describe the synthesis of a series of phthalocyanine (Pc)–perylenediimide (PDI)8 “octad” molecules, in which eight PDI moieties are attached to a Pc core through alkyl‐chain linkers. There is clear spectroscopic evidence that these octads can exist as non‐aggregated “monomers” or form aggregates along the Pc cores, depending on the type of Pc and the solvent medium. In the low dielectric constant...
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