18 April 2017 Influence of dilution with organic solvents on emission spectra of CdSe/ZnS quantum dots
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Proceedings Volume 10252, Optical Manipulation Conference; 1025219 (2017) https://doi.org/10.1117/12.2269436
Event: SPIE Technologies and Applications of Structured Light, 2017, Yokohama, Japan
Abstract
The emission spectra of CdSe/ZnS core-shell dots have been monitored after the dilution of their toluene solution with organic solvents (toluene, n-hexane, diethyl ether, acetone, ethanol, and methanol). In addition to the well-known difference of the emission efficiency according to the solvent, we found their time variation depending on the solvent. From the discussion based on the solubility of the capping organic ligand, hexadecylamine (HDA), to each solvent it is suggested that the observed time variation is caused by the liquation of the capping molecules form the dot surface and the resulting change of the number of the trap site for charges in the quantum dot.
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Mitsutaka Kumakura, Mitsutaka Kumakura, Asuka Kinan, Asuka Kinan, Takeshi Moriyasu, Takeshi Moriyasu, } "Influence of dilution with organic solvents on emission spectra of CdSe/ZnS quantum dots", Proc. SPIE 10252, Optical Manipulation Conference, 1025219 (18 April 2017); doi: 10.1117/12.2269436; https://doi.org/10.1117/12.2269436
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