| 摘要 |
PROBLEM TO BE SOLVED: To provide a brightness control method of wavelength conversion nano-particles and the wavelength conversion nano-particles, capable of further enhancing emission brightness of manufactured wavelength conversion nano-particles in a solution.SOLUTION: In a manufacturing process of wavelength conversion nano-particles, emission brightness higher than before can be achieved by treating them at a high pressure (for example, 607.95 kPa) and a high temperature (for example, 200°C) after a pH is adjusted to a pH of 10.5 higher than before. After manufacturing of the wavelength conversion nano-particles, the emission brightness of the wavelength conversion nano-particles immediately after the manufacturing can be further enhanced since a pH of an aqueous solution having the dispersed wavelength conversion nano-particles is reduced (for example, to a pH of 7.0) by supplying a carbon dioxide gas to the aqueous solution. |
