| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a zinc oxide quantum dot of which average particle size is 10 nm or less, particle distribution is extremely narrow and crystallinity is high, and to provide a method of manufacturing a zinc oxide quantum dot which can efficiently manufacture the zinc oxide quantum dot. <P>SOLUTION: The average particle size D is ≤10 nm, and a ratio σ/D of the standard deviation σ of particle size to D is ≤0.15. In the fluorescence spectrum, a ratio A/B of a maximum fluorescence intensity A in an area of 2.0-3.0 eV to a maximum fluorescence intensity B in an area of ≥3.0 eV is made to be ≤0.15. A zinc oxide quantum dot is produced in a laser abrasion device 1, and the produced zinc oxide quantum dot is heated in an air flow by an electric furnace 3 so as to promote crystallization. The heated zinc oxide quantum dot is classified by a derivative type electric mobility classifier (DMA) 4, so as to manufacture a zinc oxide quantum dot. The heat treatment is conducted at ≥500°C. <P>COPYRIGHT: (C)2009,JPO&INPIT |
