Spectroscopic characterization of Ti-doped α-ZnAl2S4 spinel-type single crystals

被引：9

作者：

Anghel, Sergiu ^{[1
,2
]}

Boulon, Georges ^{[2
]}

Brenier, Alain ^{[2
]}

Fortin, Emery ^{[3
]}

Klokishner, Sophia ^{[1
]}

Koshchug, Dmitrii ^{[4
]}

Kulyuk, Leonid ^{[1
]}

Sushkevich, Konstantin ^{[5
]}

机构：

[1] Inst Appl Phys, MD-2028 Kishinev, Moldova

[2] Univ Lyon 1, CNRS, UMR 5620, F-69622 Villeurbanne, France

[3] Univ Ottawa, Dept Phys, Ottawa, ON K1N 6N5, Canada

[4] Moscow MV Lomonosov State Univ, Geol Fac, Moscow 119899, Russia

[5] Moldova State Univ, Dept Phys, MD-2009 Kishinev, Moldova

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2010年 / 22卷 / 05期

关键词：

CHARGE-EXCHANGE PROCESSES; OPTICAL-PROPERTIES; SAPPHIRE CRYSTALS; MGAL2O4; SPINEL; ABSORPTION; TRANSITION; SPECTRA; CDSE; LUMINESCENCE; IMPURITIES;

D O I：

10.1088/0953-8984/22/5/055903

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The spectroscopic characteristics of the alpha-ZnAl2S4 wide bandgap semiconductor doped with Ti ions are investigated. It is shown, that the ZnAl2S4: Ti spinel-type crystals exhibit luminescence in the IR spectral range 0.8-1.4 mu m. The observed spectroscopic characteristics are assigned to the emission bands arising from the ligand -Ti4+ charge transfer for octahedral sites of titanium that is in agreement with the experimental evidence for the absence of the EPR signal from Ti ions. A qualitative explanation of the experimental data is given.

引用

页数：6

共 27 条

[1]

Ballhausen C. J., 1964, MOL ORBITAL THEORY, P103

[2] LASER-EXCITED LUMINESCENCE IN TI-DOPED MGAL2O4 SPINEL [J].