Time-Dependent Growth of Silica Shells on CdTe Quantum Dots
Abstract
:1. Introduction
2. Materials and Methods
2.1. Chemicals and Materials
2.2. Synthesis of CdTe Nanocrystals
2.3. Synthesis of CdTe/SiO2 Nanocrystals
2.4. Ethanol Precipitations of CdTe/SiO2 Nanocrystals
2.5. Photophysical and Size Characterization
3. Results and Discussion
3.1. Photophysical Properties
3.2. Size Characterization
4. Conclusions
Author Contributions
Funding
Conflicts of Interest
References
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QDs | Time of Silica Shell Growth (h) | DLS (nm) | SEM/TEM * (nm) |
---|---|---|---|
CdTe | / | 3.5 ± 0.2 | 3.8 ± 0.3 * |
CdTe/SiO2 | 24 | 28.8 ± 2.2 | 53.7 ± 4.2 |
CdTe/SiO2 | 72 | 29.2 ± 2.2 | 59.7 ± 4.0 |
CdTe/SiO2 + EtOH | 24 | 50.1 ± 9.3 | 62.3 ± 7.5 |
CdTe/SiO2 + EtOH | 72 | 115.1 ± 13.7 | 83.1 ± 6.9 |
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Modlitbová, P.; Klepárník, K.; Farka, Z.; Pořízka, P.; Skládal, P.; Novotný, K.; Kaiser, J. Time-Dependent Growth of Silica Shells on CdTe Quantum Dots. Nanomaterials 2018, 8, 439. https://doi.org/10.3390/nano8060439
Modlitbová P, Klepárník K, Farka Z, Pořízka P, Skládal P, Novotný K, Kaiser J. Time-Dependent Growth of Silica Shells on CdTe Quantum Dots. Nanomaterials. 2018; 8(6):439. https://doi.org/10.3390/nano8060439
Chicago/Turabian StyleModlitbová, Pavlína, Karel Klepárník, Zdeněk Farka, Pavel Pořízka, Petr Skládal, Karel Novotný, and Jozef Kaiser. 2018. "Time-Dependent Growth of Silica Shells on CdTe Quantum Dots" Nanomaterials 8, no. 6: 439. https://doi.org/10.3390/nano8060439