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Synthesis and Characterization of Strongly Luminescing ZnS-Capped CdSe Nanocrystals
Abstract
We describe the synthesis of ZnS-capped CdSe semiconductor nanocrystals using organometallic reagents by a two-step single-flask method. X-ray photoelectron spectroscopy, transmission electron microscopy and optical absorption are consistent with nanocrystals containing a core of nearly monodisperse CdSe of 27−30 Å diameter with a ZnS capping 6 ± 3 Å thick. The ZnS capping with a higher bandgap than CdSe passivates the core crystallite removing the surface traps. The nanocrystals exhibit strong and stable band-edge luminescence with a 50% quantum yield at room temperature.
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Cited by
Chemistry and Properties of Nanocrystals of Different Shapes
Burda, C., Chen, X., Narayanan, R., & El-Sayed, M. A. (2005) · Chemical Reviews · doi:10.1021/cr030063a · Cited by 7,230
Synthesis and Characterization of Monodisperse Nanocrystals and Close-Packed Nanocrystal Assemblies
Murray, C. B., Kagan, C. R., & Bawendi, M. G. (2000) · Annual Review of Materials Science · doi:10.1146/annurev.matsci.30.1.545 · Cited by 4,353
Dabbousi, B. O., Rodriguez-Viejo, J., Mikulec, F. V., Heine, J. R., Mattoussi, H., Ober, R., Jensen, K. F., & Bawendi, M. G. (1997) · The Journal of Physical Chemistry B · doi:10.1021/jp971091y · Cited by 4,229
Perspectives on the Physical Chemistry of Semiconductor Nanocrystals
Alivisatos, A. P. (1996) · The Journal of Physical Chemistry · doi:10.1021/jp9535506 · Cited by 3,595
Probing the Cytotoxicity of Semiconductor Quantum Dots
Derfus, A. M., Chan, W. C. W., & Bhatia, S. N. (2004) · Nano Letters · doi:10.1021/nl0347334 · Cited by 3,391
Metadata
- Authors
- Hines, M. A., & Guyot-Sionnest, P.
- Venue
- The Journal of Physical Chemistry
- Publisher
- American Chemical Society (ACS)
- Published
- 1996-01-01
- Volume
- 100
- Issue
- 2
- Pages
- 468-471
- ISSN
- 0022-3654 (ISSN-L)
- 1541-5740
- OpenAlex
- W2038980827
- Cited by
- 2,887
- References
- 0
- FWCI
- 25.00
- Type
- journal article
- Language
- en
- Open access
- closed
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- Hines, M. A., & Guyot-Sionnest, P. (1996). Synthesis and Characterization of Strongly Luminescing ZnS-Capped CdSe Nanocrystals. The Journal of Physical Chemistry. https://doi.org/10.1021/jp9530562
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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