Composition for reflective film used in light-emitting element, light-emitting element, and manufacturing method thereof
A manufacturing method and technology for light-emitting elements, which can be applied to electrical components, semiconductor devices, circuits, etc., can solve problems such as thermal degradation and light degradation, and achieve the effects of improving adhesion, suppressing degradation, and prolonging life.
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Embodiment 1
[0097] First, a composition for a reflective film is produced. The production procedure is shown below.
[0098]
[0099] An aqueous metal salt solution was prepared by dissolving silver nitrate in deionized water. In addition, sodium citrate was dissolved in deionized water to prepare a sodium citrate aqueous solution having a concentration of 26% by mass. In a nitrogen stream maintained at 35°C, granular ferrous sulfate was directly added to the sodium citrate aqueous solution and dissolved to prepare a reducing agent aqueous solution containing citrate ions and ferrous ions in a molar ratio of 3:2.
[0100] Next, while maintaining the above-mentioned nitrogen flow at 35° C., a stirring bar of a magnetic stirrer was added to the reducing agent aqueous solution, and while stirring at a rotating speed of the stirring bar at 100 rpm, the above-mentioned metal salt aqueous solution was dropped into the reducing agent aqueous solution for mixing. . Here, the concentration of...
Embodiment 2
[0105] After making the silver nanoparticle dispersion in the same manner as in Example 1, the metal nanoparticles were dispersed by adding and mixing 10 parts by mass of the obtained metal nanoparticles into 90 parts by mass of a mixed solution containing water, ethanol and methanol, and adding to the dispersion Polyvinylpyrrolidone (PVP, molecular weight: 360,000) and tin acetate were added to the solution at a ratio of 96 parts by mass to form metal nanoparticles and 4 parts by mass of PVP to prepare a composition for a reflective film. Furthermore, the metal nanoparticles constituting the composition for a reflective film contain 75% by mass or more of the metal nanoparticles. Next, it carried out similarly to Example 1, and obtained the reflective film of thickness 100nm.
Embodiment 3
[0107] After making the silver nanoparticle dispersion in the same manner as in Example 1, the metal nanoparticles were dispersed by adding and mixing 10 parts by mass of the obtained metal nanoparticles into 90 parts by mass of a mixed solution containing water, ethanol and methanol, and adding to the dispersion Zinc acetate was added to the liquid at a ratio of 95 parts by mass of metal nanoparticles and 5 parts by mass of zinc acetate to prepare a composition for a reflective film. Next, it carried out similarly to Example 1, and obtained the reflective film of thickness 200nm.
[0108] Next, a composition for a reinforced film was produced. The production procedure is shown below.
[0109]
[0110] With neopentyl glycol diacrylate as raw material monomer, in PGME 100cm 3 10 g was dissolved in , and 0.5 g of 1-hydroxy-cyclohexyl-phenyl-ketone was added, and kept at 50°C for 1 hour while vigorously stirring, to synthesize an acrylic resin. This acrylic resin was diluted...
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