Premium
Effect of Aging on Luminescence from Isolated Mn 2+ Confined in Cd 0.95 Mn 0.05 S Clusters
Author(s) -
Levy Laurent,
Ingert Dorothee,
Feltin Nicolas,
Pileni MariePaule
Publication year - 1998
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/(sici)1521-4095(199801)10:1<53::aid-adma53>3.0.co;2-o
Subject(s) - luminescence , materials science , passivation , nanocrystal , doping , ion , photoluminescence , semiconductor , magnetic semiconductor , chemical physics , condensed matter physics , nanotechnology , optoelectronics , chemistry , physics , organic chemistry , layer (electronics)
Luminescence from dilute magnetic semiconductors (DMSs) such as Cd 0.95 Mn 0.05 S, in which the magnetic ion Mn 2+ randomly replaces the host cation, has been studied. The spectroscopic behavior of Cd 0.95 Mn 0.05 S is reported to change markedly when the particles are aged in micellar solution. It is concluded that the high luminescence efficiency observed for Mn 2+ ‐doped nanocrystals cannot be attributed to a particle‐size effect, as expected within the framework of an electron–hole localization theory. Instead, the luminescence is attributed to the aging and/or passivation of the particles.