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SM ISO690:2012 COLEV, Andrei. Kinetics of the excitonic luminescence in MoS2:Cl2 layered crystals. In: Moldavian Journal of the Physical Sciences, 2009, nr. 1(8), pp. 82-86. ISSN 1810-648X. |
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Moldavian Journal of the Physical Sciences | ||||||
Numărul 1(8) / 2009 / ISSN 1810-648X /ISSNe 2537-6365 | ||||||
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Pag. 82-86 | ||||||
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Due to their layered structure, the transition metal dichalcogenide compound 2H-MoS2 can
be intercalated with foreign atoms and molecules. The 2H-MoS2 crystals intercalated with halogen molecules (Cl2) at low temperatures exhibit a strong luminescence due to the bound excitons
recombination. In this work, the results of study of the excitonic luminescence kinetics for
2H-MoS2:Cl2 single crystals are presented. A kinetic model describing the temperature dependences of the steady-state luminescence intensity and of the radiative decay time is proposed. The
lifetimes of the excitonic levels and the activation energy of the excitonic luminescence quenching caused by a self-trapping process for both studied compounds were determined.
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