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Cherevkov, Sergei A.
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Publications (7/7 displayed)
- 2021Composite Nanospheres Comprising Luminescent Carbon Dots Incorporated into a Polyhedral Oligomeric Silsesquioxane Matrixcitations
- 2020Tunable Mie Resonances of Tin-based Iodide Perovskite Islandlike Films with Enhanced Infrared Photoluminescencecitations
- 2020Influence of the solvent environment on luminescent centers within carbon dotscitations
- 2020Strongly Luminescent Composites Based on Carbon Dots Embedded in a Nanoporous Silicate Glasscitations
- 2020Stable Luminescent Composite Microspheres Based on Porous Silica with Embedded CsPbBr3 Perovskite Nanocrystalscitations
- 2019Ternary Composites with PbS Quantum Dots for Hybrid Photovoltaicscitations
- 20183D superstructures with an orthorhombic lattice assembled by colloidal PbS quantum dotscitations
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article
Strongly Luminescent Composites Based on Carbon Dots Embedded in a Nanoporous Silicate Glass
Abstract
Luminescent composites based on entirely non-toxic, environmentally friendly compounds are in high demand for a variety of applications in photonics and optoelectronics. Carbon dots are a recently developed kind of luminescent nanomaterial that is eco-friendly, biocompatible, easy-to-obtain, and inexpensive, with a stable and widely tunable emission. Herein, we introduce luminescent composites based on carbon dots of different chemical compositions and with different functional groups at the surface which were embedded in a nanoporous silicate glass. The structure and optical properties of these composites were comprehensively examined using electron microscopy, Fourier transform infrared transmission, UV-Vis absorption, and steady-state and time-resolved photoluminescence. It is shown that the silicate matrix efficiently preserved, and even enhanced the emission of different kinds of carbon dots tested. The photoluminescence quantum yield of the fabricated nanocomposite materials reached 35–40%, which is comparable to or even exceeds the values for carbon dots in solution.