Abstract
We report on three-dimensional fluorescence imaging of micron-size faceted crystals precipitated from solutions of CdSe nanocrystals. Such crystals have previously been suggested to be superlattices of CdSe quantum dots [1,2]. Possible applications for these materials include their use in optical and optoelectronic devices. The micron-size crystals were grown by slow evaporation from toluene solutions of CdSe nanocrystals in the range of 3-6 nm, produced by traditional wet-chemistry techniques. By using a confocal microscope with laser illumination, three-dimensional raster-scanning and synchronized hyper-spectral detection, we have generated spatial profiles of the fluorescence emission intensity and spectrum. The fluorescence data of the micro-crystals were compared with spectra of individual nanocrystals obtained from the same solution. The results do not support the assertion that these microcrystals consist of CdSe superlattices.
Original language | English (US) |
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Title of host publication | Materials Research Society Symposium - Proceedings |
Editors | P. Guyot-Sionnest, H. Mattoussi, U. Woggon, Z.L. Wang |
Pages | 245-250 |
Number of pages | 6 |
Volume | 789 |
State | Published - 2003 |
Externally published | Yes |
Event | Quantum Dots, Nanoparticles and Nanowires - Boston, MA, United States Duration: Dec 1 2003 → Dec 5 2003 |
Other
Other | Quantum Dots, Nanoparticles and Nanowires |
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Country | United States |
City | Boston, MA |
Period | 12/1/03 → 12/5/03 |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials