Site-selective transient photoluminescence enhancement of impurity-trapped excitons in NaMgF3:Yb2+

被引：15

作者：

Hughes-Currie, Rosa B. ^{[1
]}

Senanayake, Pubudu S. ^{[1
]}

Wells, Jon-Paul R. ^{[1
]}

Reid, Michael F. ^{[1
,2
]}

Berden, Giel ^{[3
]}

Reeves, Roger J. ^{[1
,2
]}

Meijerink, Andries ^{[4
]}

机构：

[1] Univ Canterbury, Dept Phys & Astron, Christchurch 8140, New Zealand

[2] Univ Canterbury, MacDiarmid Inst Adv Mat & Nanotechnol, Christchurch 8140, New Zealand

[3] FOM Inst Plasmaphys Rijnhuizen, FELIX Free Electron Laser Facil, NL-3430 BE Nieuwegein, Netherlands

[4] Univ Utrecht, Debye Inst NanoMat Sci, NL-3508 TA Utrecht, Netherlands

来源：

PHYSICAL REVIEW B | 2013年 / 88卷 / 10期

关键词：

LUMINESCENCE; KMGF3;

D O I：

10.1103/PhysRevB.88.104304

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The excited-state structure of impurity-trapped excitons are measured in a multisite system. We use a two-color (UV-IR) pulsed photoluminescence enhancement technique, which probes the interlevel transitions and dynamics of impurity-trapped excitons in doped insulating phosphor materials. The technique is applied to NaMgF3:Yb2+, which exhibits emission from two charge-compensation centers with peaks at 22300 cm(-1) (448 nm) and 24000 cm(-1) (417 nm). The observed photoluminescence enhancement is caused by a combination of intraexcitonic excitation and electron trap liberation. The electron traps are inferred to have a depth of approximately 800 cm(-1).

引用

页数：11

共 19 条

[1] Transient photoluminescence enhancement as a probe of the structure of impurity-trapped excitons in CaF2:Yb2+
Reid, Michael F.
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Wells, Jon-Paul R.
Berden, Giel
Meijerink, Andries
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PHYSICAL REVIEW B, 2011, 84 (11):
[2] Impurity-trapped excitons and electron traps in CaF2:Yb2+ and SrF2:Yb2+ probed by transient photoluminescence enhancement
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Reid, M. F.
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[3] Vacuum ultraviolet synchrotron measurements of excitons in NaMgF3:Yb2+
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Ivanovskikh, Konstantin V.
Reid, Michael F.
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Reeves, Roger J.
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[4] Radiation-induced changes in the photoluminescence properties of NaMgF3:Yb nanoparticles: Yb3+ → Yb2+ valence conversion and oxygen-impurity charge transfer
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[5] Intrinsic electronic excitations and impurity luminescent centres in NaMgF3 and MgF2 doped with Yb2+
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[6] Yb2+-doped SrCl2: Electronic structure of impurity states and impurity-trapped excitons
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[8] Temporal dynamics of the frequency non-degenerate transient photoluminescence enhancement observed following excitation of inter configurational f → d transitions in CaF2:Yb2+
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