Mn2+ intra-shell recombination in bulk and quantum dots of II–VI compounds

Godlewski, M.; Ivanov, V. Yu.; Bergman, Peder; Ḿonemar, B.; Golacki, Z.; Karczewski, G.

doi:10.1016/s0925-8388(02)00088-9

Cited by 21 publications

(22 citation statements)

References 8 publications

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“…Bol and Meijerink [10], and also the present authors [11], have shown that PL of Mn 2+ in nanostructures shows "normal" ms range PL decay, observed together with a fast component of the PL decay, in contrast to the predictions of the quantum confinement model. Bol and Meijerink related ultrafast component of the PL decay to another PL, which overlaps with Mn 2+ intra-shell PL [10].…”

supporting

confidence: 56%

“…This claim is based on the results of PL kinetics measurements performed for CdMnTe QD system [11,15]. Comparing rise kinetics of the excitonic PL and decay kinetics of Mn 2+ intra-shell PL we noticed (see Fig.…”

mentioning

confidence: 70%

“…Stationary PL, time-resolved PL, ESR, and ODMR setups used in the present study are described elsewhere [8,11,14,15].…”

Section: Methodsmentioning

confidence: 99%

“…We applied ODMR to identify mechanism(s) responsible for shortening of decay time of Mn 2+ PL [11,14,15,17]. In this study Mn 2+ magnetic resonance was detected optically.…”

Section: Fig 2 Comparison Of Pl Kinetics Of Mnmentioning

confidence: 99%

“…For example, ODMR investigations of CdMnTe QW system indicate that spin relaxation rate depends on excitation intensity if free carriers are photoexcited [11,14,15], suggesting that the spin-flip interactions with free carriers can significantly affect rate of Mn 2+ PL. Also, comparison of the PL kinetics of the Mn 2+ PL measured at two excitation conditions (Figs.…”

mentioning

confidence: 99%

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Origin of Ultrafast Component of Photoluminescence Decay in Nanostructures Doped with Transition Metal or Rare-Earth Ions

et al. 2005

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Bulk samples, layers, quantum well, and quantum dot structures of II-Mn-VI samples all show coexistence of slow and fast components of Mn 2+ 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 Mn 2+ intra-shell transition to spin dependent magnetic interactions between localized spins of Mn 2+ ions and between Mn 2+ ions and spins/magnetic moments of free carriers. The latter mechanism is enhanced in nanostructures.

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supporting

confidence: 56%

mentioning

confidence: 70%

“…Stationary PL, time-resolved PL, ESR, and ODMR setups used in the present study are described elsewhere [8,11,14,15].…”

Section: Methodsmentioning

confidence: 99%

“…We applied ODMR to identify mechanism(s) responsible for shortening of decay time of Mn 2+ PL [11,14,15,17]. In this study Mn 2+ magnetic resonance was detected optically.…”

Section: Fig 2 Comparison Of Pl Kinetics Of Mnmentioning

confidence: 99%

mentioning

confidence: 99%

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Origin of Ultrafast Component of Photoluminescence Decay in Nanostructures Doped with Transition Metal or Rare-Earth Ions

et al. 2005

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Concentration and size dependence of the dynamics of the Mn 3d⁵ luminescence in wire‐like arrangements of (Zn,Mn)S nanoparticles

Chen

Kampmann

Klar

et al. 2006

Physica Status Solidi (b)

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(Zn,Mn)S nanoparticles with Mn concentrations ranging from 1% to 30% and in a wire-like arrangement were formed inside mesoporous SiO 2 matrices of various pore diameters. The nanoparticles were characterised using photoluminescence and excitation spectroscopy. It is found, that the Mn 2+ ions are incorporated on cation lattice sites replacing Zn. The decay times of the internal Mn 2+ (3d 5) luminescence are studied in detail by time resolved spectroscopy over more than 5 orders of magnitude in intensity. A concentration and a remarkable size dependence of the time behaviour has been observed indicating a geometry dependence of the energy transfer processes within the Mn system.

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Two‐colour spectroscopy of ZnSe:Cr

Ivanov

Godlewski

Gregorkiewicz

2007

Physica Status Solidi (b)

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Mn2+ intra-shell recombination in bulk and quantum dots of II–VI compounds

Cited by 21 publications

References 8 publications

Origin of Ultrafast Component of Photoluminescence Decay in Nanostructures Doped with Transition Metal or Rare-Earth Ions

Origin of Ultrafast Component of Photoluminescence Decay in Nanostructures Doped with Transition Metal or Rare-Earth Ions

Concentration and size dependence of the dynamics of the Mn 3d⁵ luminescence in wire‐like arrangements of (Zn,Mn)S nanoparticles

Two‐colour spectroscopy of ZnSe:Cr

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Mn2+ intra-shell recombination in bulk and quantum dots of II–VI compounds

Cited by 21 publications

References 8 publications

Origin of Ultrafast Component of Photoluminescence Decay in Nanostructures Doped with Transition Metal or Rare-Earth Ions

Origin of Ultrafast Component of Photoluminescence Decay in Nanostructures Doped with Transition Metal or Rare-Earth Ions

Concentration and size dependence of the dynamics of the Mn 3d5 luminescence in wire‐like arrangements of (Zn,Mn)S nanoparticles

Two‐colour spectroscopy of ZnSe:Cr

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Concentration and size dependence of the dynamics of the Mn 3d⁵ luminescence in wire‐like arrangements of (Zn,Mn)S nanoparticles