Mn2+ 3d luminescence kinetics in Zn1−x MnxSe

Autor:	V. N. Yakimovich, N. G. Filosofov, N. N. Vasil’ev, A. Yu. Serov, V. I. Konstantinov, V. F. Agekyan
Rok vydání:	2003
Předmět:	Materials science Solid-state physics Kinetics chemistry.chemical_element Manganese Condensed Matter Physics Electronic Optical and Magnetic Materials Ion Optical pumping chemistry Atomic physics Luminescence Saturation (magnetic) Excitation
Zdroj:	Physics of the Solid State. 45:1435-1439
ISSN:	1090-6460 1063-7834
DOI:	10.1134/1.1602875
Popis:	Intracenter luminescence (IL) of Mn2+ in Zn1−xMnxSe (x=0.07, 0.02) was studied under pulsed excitation by the neodymium laser second harmonic. At 4 K, the IL saturation originates from the nonlinearity of the system only at the instant of excitation, the IL decay kinetics after the exciting pulse termination depending only weakly on the pumping level. At 77 K, the decay kinetics in Zn0.93Mn0.07Se depends substantially on the pumping level, because the migration of intracenter excitation over the manganese ions initiates up-conversion, which is a slow nonlinear process. As shown by IL decay measurements in Zn0.98Mn0.02Se (x=0.02), excitation migration over the Mn2+ ions is insignificant even at a high temperature and under strong optical pumping.
Databáze:	OpenAIRE
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