Nano composite material, preparation method thereof, solution composition and light-emitting diode
A nanocomposite material and solution technology, applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problem of low electron mobility of nanoparticles
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[0021] A method for preparing a nanocomposite material, comprising: reacting metal oxide nanoparticles and a trifluoromethyl-containing precursor in a solution under acidic conditions under an inert gas atmosphere to prepare a surface modified with at least one trifluoromethyl group. Methyl metal oxide nanoparticles.
[0022] Specifically, the metal oxide nanoparticles and the trifluoromethyl-containing precursor are reacted in a solution under acidic conditions, so that the precursor is decomposed to form a free trifluoromethyl group, and the free trifluoromethyl group is combined with the trifluoromethyl group. The above-mentioned metal oxide nanoparticles are combined to prepare metal oxide nanoparticles with trifluoromethyl groups on the surface. The metal oxide nanoparticles and the trifluoromethyl-containing precursors are reacted synchronously in the solution under acidic conditions, so that the free trifluoromethyl groups formed by acid hydrolysis can be combined with ...
Embodiment approach
[0024] The metal oxide nanoparticles refer to a type of n-type semiconductor metal oxides with a wide band gap, such as zinc oxide, zirconium oxide, titanium oxide and the like. As an embodiment, the metal oxide nanoparticles are selected from at least one of zinc oxide, zirconium oxide, and titanium oxide. In some embodiments, the particle size of the metal oxide nanoparticles is 3-12nm, and the metal oxide nanoparticles in this particle size range can disperse a uniform colloidal solution in the solution, and have good film-forming performance, which is conducive to the formation of Uniform and flat film layer to improve the light-emitting performance of light-emitting devices.
[0025] The precursor refers to a class of organic matter that can be decomposed by a reaction to form a free trifluoromethyl group. As an embodiment, the precursor is selected from 2-chloro-4-(trifluoromethoxy)aniline, trifluoromethoxy At least one of sodium fluoromethanesulfonate, trifluoromethyld...
Embodiment 1
[0067] This embodiment provides a light-emitting diode, the preparation of which specifically includes the following steps:
[0068] 1. Preparation of nanocomposite material A
[0069]Disperse zinc oxide nanoparticles in 10 mL of butanol, heat to 40 °C under argon atmosphere and stir until dissolved to form a zinc oxide solution with a concentration of 1.0 M; add 0.5 mL of n-octanoic acid to the zinc oxide solution and stir for 10 minutes Then add 0.1mmol of 2-chloro-4-(trifluoromethoxy)aniline and react for 30 minutes; Methyl zinc oxide nanoparticles;
[0070] 2. Preparation of light-emitting diode A
[0071] 1) Dispersing the nanocomposite material A in butanol to obtain the electron transport layer slurry A; depositing the electron transport layer slurry A on the ITO substrate to form the electron transport layer A;
[0072] 2) Depositing a CdSe / ZnS core-shell green quantum dot luminescent layer on the electron transport layer A;
[0073] 3) Print a hole transport layer...
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