Optical properties of Mn-doped CdS nanocrystals fabricated by sequential ion implantation
Abstract
We have studied luminescence spectrum and dynamics of Mn-doped CdS nanocrystals fabricated by sequential Cd+, S+, and Mn+ ion implantation into Al2O3 matrices. The photoluminescence (PL) due to the Mn2+ intra-3d transition is clearly observed near 570 nm in Mn-doped CdS nanocrystals. The PL excitation spectrum of the Mn2+ luminescence in Mn-doped CdS nanocrystals is similar to the optical absorption spectrum and PL excitation spectrum of undoped CdS nanocrystals. Our spectroscopic data show that ion-beam synthesis is one of the methods of the fabrication of doped semiconductor nanocrystals. The luminescence mechanism of Mn-doped CdS nanocrystals will be discussed.
- Publication:
-
Applied Physics Letters
- Pub Date:
- July 2002
- DOI:
- Bibcode:
- 2002ApPhL..81..535K
- Keywords:
-
- Absorption Spectra;
- Cadmium Compounds;
- Doped Crystals;
- Impurities;
- Ion Implantation;
- Manganese;
- Nanostructure (Characteristics);
- Optical Properties;
- Photoluminescence;
- Radiation Effects;
- Semiconductors (Materials);
- Thin Films;
- 78.67.Bf;
- 78.55.Et;
- 78.66.Hf;
- 81.05.Dz;
- 61.46.+w;
- 81.07.Bc;
- 61.72.Vv;
- 61.80.Jh;
- Solid-State Physics;
- Nanocrystals and nanoparticles;
- II-VI semiconductors;
- Nanocrystalline materials;
- Doping and impurity implantation in III-V and II-VI semiconductors;
- Ion radiation effects