Excitons and interconfigurational transitions in CaF2:Yb2+ crystals

被引：14

作者：

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

Salkeld, Alexander J. ^{[1
]}

Ivanovskikh, Konstantin V. ^{[3
,4
]}

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

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

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

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] ANK Serv Ltd, Novouralsk 624131, Sverdlovsk Regi, Russia

[4] Ural Fed Univ, Ekaterinburg 620002, Russia

来源：

JOURNAL OF LUMINESCENCE | 2015年 / 158卷

关键词：

Exciton; Lanthanide; Ytterbium; CaF2; Synchrotron radiation; VUV spectroscopy; TEMPERATURE-DEPENDENCE; TRAPPED EXCITONS; LUMINESCENCE;

D O I：

10.1016/j.jlumin.2014.09.050

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A time-resolved VUV spectroscopic study of emission and excitation spectra of CaF2:Yb2+ has been performed to investigate excitation and relaxation mechanisms of both impurity-trapped excitons and intrinsic excitons in CaF2. Host-to-impurity energy transfer mechanisms leading to formation of impurity-trapped excitons have been discussed. The change in free exciton excitation peak position with increasing lattice temperature has been measured and is well approximated by Vina's expression for the temperature shift of a semiconductor band gap. The 4f(14)-> 4f(13)5d CaF2:Yb2+ absorption bands are successfully modeled with a semi-empirical effective Hamiltonian calculation. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：197 / 202

页数：6

共 50 条

[1] Additive colouring of CaF2:Yb crystals: determination of Yb2+ concentration in CaF2:Yb crystals and ceramics
A. S. Shcheulin
A. E. Angervaks
T. S. Semenova
L. F. Koryakina
M. A. Petrova
P. P. Fedorov
V. M. Reiterov
E. A. Garibin
A. I. Ryskin
Applied Physics B, 2013, 111 : 551 - 557
[2] Additive colouring of CaF2:Yb crystals: determination of Yb2+ concentration in CaF2:Yb crystals and ceramics
Shcheulin, A. S.
Angervaks, A. E.
Semenova, T. S.
Koryakina, L. F.
Petrova, M. A.
Fedorov, P. P.
Reiterov, V. M.
Garibin, E. A.
Ryskin, A. I.
APPLIED PHYSICS B-LASERS AND OPTICS, 2013, 111 (04): : 551 - 557
[3] Optical study of Yb3+/Yb2+ conversion in CaF2 crystals
Kaczmarek, SM
Tsuboi, T
Ito, M
Boulon, G
Leniec, G
JOURNAL OF PHYSICS-CONDENSED MATTER, 2005, 17 (25) : 3771 - 3786
[4] Pressure dependence of the emission in CaF2:Yb2+
Mahlik, S.
Lazarowska, A.
Grinberg, M.
Wells, J-P R.
Reid, M. F.
JOURNAL OF PHYSICS-CONDENSED MATTER, 2015, 27 (30)
[5] Impurity-trapped excitons and electron traps in CaF2:Yb2+ and SrF2:Yb2+ probed by transient photoluminescence enhancement
Senanayake, P. S.
Wells, J. P. R.
Reid, M. F.
Berden, G.
Meijerink, A.
Reeves, R. J.
JOURNAL OF LUMINESCENCE, 2013, 133 : 81 - 85
[6] Transient photoluminescence enhancement as a probe of the structure of impurity-trapped excitons in CaF2:Yb2+
Reid, Michael F.
Senanayake, Pubudu S.
Wells, Jon-Paul R.
Berden, Giel
Meijerink, Andries
Salkeld, Alexander J.
Duan, Chang-Kui
Reeves, Roger J.
PHYSICAL REVIEW B, 2011, 84 (11):
[7] Concentration distribution of Yb2+ and Yb3+ ions in YbF3:CaF2 crystals
Nicoara, Irina
Pecingina-Garjoaba, Nicolae
Bunoiu, Octavian
JOURNAL OF CRYSTAL GROWTH, 2008, 310 (7-9) : 1476 - 1481
[8] Optical spectroscopy of Yb2+ ions in YbF3-doped CaF2 crystals
Nicoara, Irina
Lighezan, Liliana
Enculescu, Monica
Enculescu, Ionut
JOURNAL OF CRYSTAL GROWTH, 2008, 310 (7-9) : 2026 - 2032
[9] Interconfigurational and intraconfigurational transitions of Yb2+ and Yb3+ ions in hydroxyapatite: A cathodoluminescence study
Zavala, Luz A.
Fernandez, Paloma
Novitskaya, Ekaterina
Diaz, Jorge N.
Herrera, Manuel
Graeve, Olivia A.
ACTA MATERIALIA, 2017, 135 : 35 - 43
[10] Growth of YbF3-doped CaF2 crystals and characterization of Yb3+/Yb2+ conversion
Nicoara, Irina
Stef, Marius
Pruna, Andreea
JOURNAL OF CRYSTAL GROWTH, 2008, 310 (7-9) : 1470 - 1475

← 1 2 3 4 5 →