Method for manufacturing perovskite nanocrystal particle light emitting body where organic ligand is substituted, nanocrystal particle light emitting body manufactured thereby, and light emitting device using same
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United States of America Patent
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Nov 6, 2015
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Nov 6, 2014
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Provided are a method for manufacturing a perovskite particle light-emitter where an organic ligand is substituted, a light-emitter manufactured thereby, and a light emitting device using the same. A method for manufacturing an hybrid perovskite particle light-emitter where an organic ligand is substituted may comprise the steps of: preparing a solution including an hybrid perovskite particle light-emitter, wherein the hybrid perovskite particle light-emitter comprises an halide perovskite nanocrystal structure and a plurality of first organic ligands surrounding the perovskite nanocrystal structure; and adding, to the solution, a second organic ligand which is shorter than the first organic ligands or includes a phenyl group or a fluorine group, thereby substitutes the first organic ligands with the second organic ligand. Thus, since energy transfer or charge injection into the nanocrystal structure increases through ligand substitution, it is possible to further increase light emitting efficiency and increase durability and stability by means of a hydrophobic ligand.
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