Abstract
Approximately spherical nanoparticles of the II-VI semiconductor materials CdSe and CdTe have been produced successfully by laser ablation of the bulk material in several liquids. The non-stabilized suspensions of particles are characterized by absorption spectroscopy and transmission electron microscopy (TEM). The procedure is not strongly size-selective, radii of 7 ± 3 nm were found for CdSe and CdTe by transmission electron microscopy. Acetonitrile stabilizes the particles for several days up to weeks. Prolonged irradiation leads effectively to a reduction in particles size, in which particle agglomeration may play an important role. Ablation in degassed liquids does not have a significant effect on the absorption of the suspended particles. Photoluminescence of laser-ablated CdSe and CdTe particles was not observed.
| Original language | English |
|---|---|
| Pages (from-to) | 121-127 |
| Number of pages | 7 |
| Journal | Colloids and Surfaces A: Physicochemical and Engineering Aspects |
| Volume | 279 |
| Issue number | 1-3 |
| DOIs | |
| Publication status | Published - 15 May 2006 |
Keywords
- Electronic materials
- Laser processing
- Nanomaterials
- Optical materials and properties
- Semiconductor
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