Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1539703 | Optics Communications | 2008 | 4 Pages |
Abstract
Thermo-optical parameters of CdSe/ZnS core-shell nanoparticles suspended in toluene were measured using a thermal lens (TL) technique. TL transient measurements were performed using the mode-mismatched dual-beam (excitation and probe) configuration. A He–Ne laser at λp = 632.8 nm was used as the probe beam and an Ar+ laser (at λe = 514.5 nm) was used as the excitation beam for studies as a function of both core size and concentration of CdSe/ZnS nanocrystals. The fraction thermal load (φ) and radiative quantum efficiencies (η) of the CdSe/ZnS were determined. Dependence on core size (∼2–5 nm) and concentration (∼0.01–0.62 mg/ml) was observed for both φ and η parameters.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Viviane Pilla, Leandro P. Alves, Marcos T.T. Pacheco, Egberto Munin,