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. and Park,H. (2015). Preparation and Optical Characterization
of Colloidal Carbon Quantum Dots. (e46550). Nanomeghyas, 2(4), e46550
MLA
Sasani Ghamsari,M. , , Momeni Bidzard,A. , and Park,H. . "Preparation and Optical Characterization
of Colloidal Carbon Quantum Dots" .e46550 , Nanomeghyas, 2, 4, 2015, e46550.
HARVARD
Sasani Ghamsari M., Momeni Bidzard A., Park H. (2015). 'Preparation and Optical Characterization
of Colloidal Carbon Quantum Dots', Nanomeghyas, 2(4), e46550.
CHICAGO
M. Sasani Ghamsari, A. Momeni Bidzard and H. Park, "Preparation and Optical Characterization
of Colloidal Carbon Quantum Dots," Nanomeghyas, 2 4 (2015): e46550,
VANCOUVER
Sasani Ghamsari M., Momeni Bidzard A., Park H. Preparation and Optical Characterization
of Colloidal Carbon Quantum Dots. Nanomeghyas, 2015; 2(4): e46550.
