Optical properties of Mn-doped CdS nanocrystals fabricated by sequential ion implantation

Yoshihiko Kanemitsu, Hiroki Matsubara, C. W. White

doi:10.1063/1.1494468

Optical properties of Mn-doped CdS nanocrystals fabricated by sequential ion implantation

Yoshihiko Kanemitsu

Graduate School of Materials Science, Nara Institute of Science and Technology, Ikoma, Nara 630-0101, Japan
Hiroki Matsubara

Graduate School of Materials Science, Nara Institute of Science and Technology, Ikoma, Nara 630-0101, Japan
C. W. White

Solid State Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831

説明

<jats:p>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.</jats:p>