Luminescence properties of layered mixed-anion compounds Sr2ScCuSeO3 and Sr3Sc2Cu2Se2O5

被引：6

作者：

Iwasa, Yuki ^{[1
,2
]}

Ogino, Hiraku ^{[1
]}

Song, Dongjoon ^{[1
]}

Yamanoi, Kohei ^{[2
]}

Shimizu, Toshihiko ^{[2
]}

Ueda, Jumpei ^{[3
]}

Tanabe, Setsuhisa ^{[3
]}

Sarukura, Nobuhiko ^{[2
]}

机构：

[1] Natl Inst Adv Ind Sci & Technol, 1-1-1 Cent 2, Tsukuba, Ibaraki 3058568, Japan

[2] Osaka Univ, Inst Laser Engn, 2-6 Yamadaoka, Suita, Osaka 5650871, Japan

[3] Kyoto Univ, Grad Sch Human & Environm Studies, Sakyo Ku, Yoshida Nihonmatsu Cho, Kyoto 6068501, Japan

来源：

OPTICAL MATERIALS | 2018年 / 84卷

基金：

日本学术振兴会;

关键词：

Exciton; Mixed anion compound; Layered compound; Scintillator; SEMICONDUCTING SCINTILLATORS; QUANTUM CONFINEMENT; OXYCHALCOGENIDES; OXYSULFIDE; LA2CDO2SE2; LACUOS;

D O I：

10.1016/j.optmat.2018.06.016

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report the synthesis and luminescence properties of new layered mixed-anion compounds, Sr2ScCuSeO3 and Sr3Sc2Cu2Se2O5. Sr2ScCuSeO3 and Sr3Sc2Cu2Se2O5 were synthesized by solid-state reaction and were investigated using x-ray diffraction, diffuse reflectance, and photoluminescence spectroscopies. Both compounds have very similar properties except for their optical band gaps and emission peak energies. At room temperature, Sr2ScCuSeO3 and Sr3Sc2Cu2Se2O5 exhibit optical band gaps energies of 2.9-3.0 eV. The excitonic luminescence with very fast emissions of similar to 30 ps were observed in both compounds even at room temperature. This feature of the compounds makes them suitable for fast scintillator applications. Our results suggest that the luminescence properties such as emission peak energies and lifetimes of these layered mixed-anion compounds can be controlled by changing their structure and composition.

引用

页码：205 / 208

页数：4

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