| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Gardelis, Spiros
National and Kapodistrian University of Athens
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (3/3 displayed)
- 2023Tunable and white light photoluminescence from ZnO on porous Si with the addition of carbon quantum dotscitations
- 2022Carbon Nanodots as Electron Transport Materials in Organic Light Emitting Diodes and Solar Cells.
- 2022Study of the photoluminescence of N-doped, Carbon Dot-based nanocomposite materials from citric acid and ureacitations
Places of action
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article
Study of the photoluminescence of N-doped, Carbon Dot-based nanocomposite materials from citric acid and urea
Abstract
<jats:p> In this work, we investigate the photoluminescence mechanisms of N-doped, CQD-based nanocomposites, in the form of aqueous suspensions as well as the transition to thin films, in order to facilitate their use for solid-state applications. The products of two different synthetic routes have been investigated for their optical response in the form of aqueous suspensions and thin films. In addition, dialysis was utilized to purify and separate the as-synthesized material into different fractions, which were then studied separately. The PL spectra revealed two optical centers identified as H-aggregates of citrazinic acid derivatives and 4-hydroxy-1H-pyrrolo[3,4-c]pyridine-1,3,6(2H,5H)-trione (HPPT). The materials were further studied with FTIR and UV–Vis spectroscopy, as well as TEM microscopy, in order to acquire a better understanding of these optical centers. The optical centers were found to be excitation-independent emitters, sensitive to ambient pH conditions and able to interact with each other by an energy transfer mechanism in the solid state. </jats:p>