Origin of ultrafast component of photoluminescence decay in nanostructures doped with transition metal or rare-earth ions

M. Godlewski*, S. Yatsunenko, V. Y U Ivanov, A. Khachapuridze, K. Świa̧tek, E. M. Goldys, M. R. Phillips, P. J. Klar, W. Heimbrodt

*Corresponding author for this work

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Bulk samples, layers, quantum well, and quantum dot structures of II-Mn-VI samples all show coexistence of slow and fast components of Mn2+ photoluminescence decay. Thus, fast photoluminescence decay cannot be related to low dimensionality of a host material. This also means that the model of the so-called quantum confined atom is incorrect. Based on the results of time-resolved photoluminescence and optically detected magnetic resonance investigations we relate the observed lifetime decrease in Mn2+ intra-shell transition to spin dependent magnetic interactions between localized spins of Mn2+ ions and between Mn2+ ions and spins/magnetic moments of free carriers. The latter mechanism is enhanced in nanostructures.

Original languageEnglish
Pages (from-to)65-74
Number of pages10
JournalActa Physica Polonica A
Volume107
Issue number1
Publication statusPublished - Jan 2005

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