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The band edge luminescence of surface modified CdSe nanocrystallites: Probing the luminescing state
Abstract
We study the luminescence of surface modified CdSe nanocrystallites. There has been much speculation as to the origin of the band edge emission in these quantum confined structures. Because of their large surface to volume ratios it has been suggested that the emission originates from surface-related states. However, recent theory suggests that the band edge luminescence arises from an optically inactive fine structure state or “dark” exciton. To address this issue we modify the surface of CdSe nanocrystallites with a variety of organic and inorganic ligands. We then monitor the effect changing the surface has on the energetics of the band edge luminescence through photoluminescence and fluorescence line narrowing experiments. Our results are compared with theoretical predictions for the nonresonant and resonant luminescence. We find good agreement between experiment and theory for CdSe nanocrystallites passivated with trioctylphosphine oxide, ZnS, 4-picoline, 4-(trifluoromethyl)thiophenol, and tris(2-ethylhexyl)phosphate. The lack of dependence of our data on surface modification is consistent with a dark exciton description of the band edge luminescence.
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Citations
Cites
Quantum Theory of Cyclotron Resonance in Semiconductors: General Theory
Luttinger, J. M. (1956) · Physical Review · doi:10.1103/physrev.102.1030 · Cited by 2,199
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
Self-citationDabbousi, 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
Self-citationColloidal nanocrystal synthesis and the organic–inorganic interface
Yin, Y., & Alivisatos, A. P. (2005) · Nature · doi:10.1038/nature04165 · Cited by 3,273
Anderson, N. C., Hendricks, M. P., Choi, J. J., & Owen, J. S. (2013) · Journal of the American Chemical Society · doi:10.1021/ja4086758 · Cited by 874
Metadata
- Authors
- Kuno, M., Lee, J. K., Dabbousi, B. O., Mikulec, F. V., & Bawendi, M. G.
- Venue
- The Journal of Chemical Physics
- Publisher
- AIP Publishing
- Published
- 1997-06-15
- Volume
- 106
- Issue
- 23
- Pages
- 9869-9882
- ISSN
- 0021-9606 (ISSN-L)
- 1089-7690
- OpenAlex
- W2053867938
- Cited by
- 605
- References
- 1
- FWCI
- 15.69
- Type
- journal article
- Language
- en
- Open access
- closed
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- Kuno, M., Lee, J. K., Dabbousi, B. O., Mikulec, F. V., & Bawendi, M. G. (1997). The band edge luminescence of surface modified CdSe nanocrystallites: Probing the luminescing state. The Journal of Chemical Physics. https://doi.org/10.1063/1.473875
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