| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1541446 | Optics Communications | 2007 | 5 Pages |
Abstract
The radiative quantum efficiencies η of the CdSe/ZnS core–shell nanoparticles embedded into polymethyl methacrylate (PMMA) and suspended in three different solvents: chloroform (CHCl3), toluene (C6H5CH3) and tetrahydrofuran (C4H8O) were measured using thermal lens (TL) technique. The mode-mismatched pump–probe TL measurements were accomplished in function of the CdSe/ZnS quantum-dot concentration (12–60 mg/ml) at λe = 594 nm (pump) and λp = 632.8 nm (probe). The values obtained for η were higher for CdSe/ZnS nanoparticles suspended in tetrahydrofuran and chloroform, as compared to the values for toluene. Thermal diffusivity (D) and the absolute nonradiative quantum efficiency (φ) were determined.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Viviane Pilla, Leandro P. Alves, Egberto Munin, Marcos T.T. Pacheco,