Journal
APPLIED PHYSICS LETTERS
Volume 103, Issue 15, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4824844
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Funding
- Japan Society for the Promotion of Science (JSPS) [GR073]
- Structure Control and Function of PRESTO of the Japan Science and Technology Agency (JST)
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Silicon quantum dots (Si-QDs) were produced by pulsed laser ablation in liquid. By measuring the absorption spectra and the concentration of the Si-QD solution, two extinction coefficients were obtained from UV to near IR region: the atomic molar extinction coefficient and the quantum dot molar extinction coefficient. The magnitude of the atomic molar extinction coefficient of the Si-QDs was found to be up to 30 and 270 times those of crystalline and amorphous Si, respectively, and up to 740 times that of previously fabricated Si-QDs. The Si-QDs remained stably dispersed in hydrocarbon and alcohol solvents for over 10 months. (C) 2013 AIP Publishing LLC.
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