Showing papers by "Anabela G. Rolo published in 1998"

TL;DR: In this article, the growth and optical characterisation of CdS quantum dots in the diameter range of 4-10 nm embedded in silicon dioxide glass films grown by magnetron rf-sputtering technique with post-deposition annealing was reported.

TL;DR: In this paper, the combined effects of rf-power deposition, the number of semiconductor chips on the SiO target, and post-annealing temperature on the CdS crystal size were studied.

TL;DR: In this paper, X-ray diffraction (XRD) and Raman spectroscopy were used to study SiO 2 films containing small particles of Ge and the dependence of the average size of Ge nanocrystals on the substrate temperature, r.f.-power and the fraction of semiconductor in the target was determined.

TL;DR: In this article, a dielectric response due to polar optical phonons in CdS-doped SiO 2 films (semiconductor volume fraction f ≈6-15%) was studied experimentally by means of FIR and Raman spectroscopies.