Details

Autor(en) / Beteiligte

• Il’ichev, N. N.
• Kalinushkin, V. P.
• Gulyamova, E. S.
• Mironov, S. A.
• Studenikin, M. I.
• Tumorin, V. V.
• Pashinin, P. P.

Titel

Specific Features of Concentration Quenching of the Fe2+ Luminescence in a ZnSe Single Crystal

Ist Teil von

• Bulletin of the Lebedev Physics Institute, 2023-12, Vol.50 (Suppl 9), p.S1006-S1014

Ort / Verlag

Moscow: Pleiades Publishing

Erscheinungsjahr

2023

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The time dependence of the luminescence power of the Fe 2+ ion in ZnSe at liquid nitrogen temperature has been investigated where it is excited by a short laser pulse with a wavelength of 2940 nm at various concentrations of Fe 2+ ions and various pulse energy density on the sample surface. The shape of the luminescence decay curve is shown to depend both on the Fe 2+ concentration and on the laser pulse energy density. This behavior of luminescence kinetics was interpreted as a manifestation of concentration quenching of the Fe 2+ excited state. A theoretical description of the observed dependences is proposed, the best agreement between calculated and experimental curves being obtained if we assume that the probability of quenching per time unit is proportional to the square of the concentration of Fe 2+ ions in the excited state.