1
Lasers & Optics Research School, NSTRI, Tehran, Iran
2
Department of Physics, Iran University of Science and Technology,Tehran, Iran
3
Department of Materials Science and Engineering, Yonsei University, Seoul, Korea
Abstract
This paper presents optical properties of colloidal carbon quantum dots C-QDs in distilled water produced by using a method of alkali-assisted surfactant-free oxidation of cellulose acetate. The formation of colloidal carbon nanocrystals with the size range of ~ 4-5 nm was confirmed by using high-resolution transmission electron microscopy. The photoluminescence PL properties of the colloid were investigated at different applied excitation wavelengths and we observed a wide range of tunable visible to near-infrared NIR emissions with good stability from the C-QD colloid. A detailed analysis of the results shows that the visible and NIR luminescent properties of the colloidal C-QDs can be attributed to the mechanisms of quantum confinement and surface effects, respectively.
Sasani Ghamsari, M., Momeni Bidzard, A., & Park, H. (2015). Preparation and Optical Characterization
of Colloidal Carbon Quantum Dots. Nanoscale, 2(4), -.
MLA
M. Sasani Ghamsari; A. Momeni Bidzard; H.H. Park. "Preparation and Optical Characterization
of Colloidal Carbon Quantum Dots". Nanoscale, 2, 4, 2015, -.
HARVARD
Sasani Ghamsari, M., Momeni Bidzard, A., Park, H. (2015). 'Preparation and Optical Characterization
of Colloidal Carbon Quantum Dots', Nanoscale, 2(4), pp. -.
VANCOUVER
Sasani Ghamsari, M., Momeni Bidzard, A., Park, H. Preparation and Optical Characterization
of Colloidal Carbon Quantum Dots. Nanoscale, 2015; 2(4): -.
