Carbon dots emitting light having multiple colors and method of fabricating the same
AssigneeKorea Advanced Institute of Science and Technology
InventorsDoHyun Kim, Hyojeong Yoo, Byeong Eun Kwak
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Abstract
Various embodiments provide carbon dots emitting light having multiple colors and a method of fabricating the same. According to various embodiments, the carbon dots include at least two structural characteristics. At least two emission levels indicative of different emission wavelengths, respectively, may be introduced into the carbon dots based on the structural characteristics. A ratio of emission colors of the carbon dots may be adjusted when the carbon dots are synthesized or after the carbon dots are synthesized.
Claims16
Carbon dots emitting light having multiple colors, comprising:
- at least two structural characteristics,
- wherein at least two emission levels indicative of different emission wavelengths, respectively, are introduced into the carbon dots based on the at least two structural characteristics,
- the at least two structural characteristics are bonded through a chemical bond,
- each of the at least two structural characteristics is one of a carbonaceous structure, a surface functional group, a fluorescent organic molecule, or a core defect structure,
- a ratio of at least two emission colors of the carbon dots is adjusted by adjusting a level of relative emission contribution between the at least two emission levels as the carbon dots are dispersed within a dispersion solution, and
- the level of the relative emission contribution is adjusted by a type of the dispersion solution, and
- the carbon dots are synthesized by dispersing at least one organic precursor in an organic solvent and reacting the at least one organic precursor in the organic solvent by a solvent thermal synthesis method.
A method of fabricating carbon dots emitting light having multiple colors, comprising:
- preparing at least one organic precursor;
- synthesizing the carbon dots by reacting the organic precursors with each other, wherein the carbon dots comprise at least two structural characteristics, and at least two emission levels indicative of different emission wavelengths, respectively, are introduced into the carbon dots based on the structural characteristics;
- and
- dispersing the carbon dots within a dispersion solution in order to adjust a level of relative emission contribution between the emission levels so that a ratio of emission colors of the carbon dots is adjusted,
- wherein the structural characteristics are bonded through a chemical bond,
- each of the structural characteristics is one of carbonaceous, a surface functional group, a fluorescent organic molecule, or a core defect structure, and
- the level of the relative emission contribution is adjusted based on a type of the dispersion solution, and
- the carbon dots are synthesized by dispersing the at least one organic precursor in an organic solvent and reacting the at least one organic precursor in the organic solvent by a solvent thermal synthesis method.
Dependencies are inferred from the claim text.