Synthesis and spectral properties of nanocrystalline Eu^3＋-doped pyrochlore oxide M_2Sn_2O_7 (M = Gd and Y)
Synthesis and spectral properties of nanocrystalline Eu^3＋-doped pyrochlore oxide M_2Sn_2O_7 (M = Gd and Y)
Zuoling Fu(Jilin University); Wangda Gong(Jilin University); Huaiyong Li(Pukyong National University); Qi Wu(Jilin University); Wenhao Li(Chinese Academy of Sciences); 양현경(Pukyong National University); 정중현(부경대학교)
11권 3호, 933~938쪽
초록
Nanocrystalline Eu^3＋-doped pyrochlore oxide M_2Sn_2O_7 (M = Gd and Y) has been successfully prepared by a simple and facile hydrothermal synthesis method without the presence of catalysts. The effects of hydrothermal temperature, time and base concentration on the pure phase of the products are investigated. It is found that tuning the base concentration was a crucial step for the control of the pure phase of the M_2Sn_2O_7 (M = Gd and Y) nanocrystals. All the products were systematically characterized by powder X-ray diffraction (XRD), field emission-scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), Fourier-Transform Infrared Spectroscopy (FT-IR), photoluminescence (PL)and photoluminescent excitation spectra (PLE). Furthermore, the luminescence mechanism and size dependence of their spectral properties are also discussed in detail.
Abstract
Nanocrystalline Eu^3＋-doped pyrochlore oxide M_2Sn_2O_7 (M = Gd and Y) has been successfully prepared by a simple and facile hydrothermal synthesis method without the presence of catalysts. The effects of hydrothermal temperature, time and base concentration on the pure phase of the products are investigated. It is found that tuning the base concentration was a crucial step for the control of the pure phase of the M_2Sn_2O_7 (M = Gd and Y) nanocrystals. All the products were systematically characterized by powder X-ray diffraction (XRD), field emission-scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), Fourier-Transform Infrared Spectroscopy (FT-IR), photoluminescence (PL)and photoluminescent excitation spectra (PLE). Furthermore, the luminescence mechanism and size dependence of their spectral properties are also discussed in detail.
- 발행기관:
- 한국물리학회
- 분류:
- 물리학