کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7906039 | 1510750 | 2018 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Luminescence properties of layered mixed-anion compounds Sr2ScCuSeO3 and Sr3Sc2Cu2Se2O5
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
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چکیده انگلیسی
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 2.9-3.0â¯eV. The excitonic luminescence with very fast emissions of â¼30 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.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optical Materials - Volume 84, October 2018, Pages 205-208
Journal: Optical Materials - Volume 84, October 2018, Pages 205-208
نویسندگان
Yuki Iwasa, Hiraku Ogino, Dongjoon Song, Kohei Yamanoi, Toshihiko Shimizu, Jumpei Ueda, Setsuhisa Tanabe, Nobuhiko Sarukura,