Mixed strontium-yttrium borate phosphor Sr3Y2（BO3）4 doped with Eu^3＋ ions was obtained by the sol-gel Pechini method. Crystal structure of the synthesized compound was analyzed by X-ray powder diffraction. Optimal ...Mixed strontium-yttrium borate phosphor Sr3Y2（BO3）4 doped with Eu^3＋ ions was obtained by the sol-gel Pechini method. Crystal structure of the synthesized compound was analyzed by X-ray powder diffraction. Optimal conditions for the synthesis were found. Photophysical properties of the phosphor samples were investigated by collecting excitation and luminescence spectra as well as measuring lumi- nescence lifetime. Judd-Ofelt analysis showed that Eu^3＋ ions occupied Y^3＋ sites in the crystalline network. The studied compound showed a red emission with the quantum yield of 54%-55% and can be potentially used as phosphor for plasma display panels and luminescent tubes.展开更多
Ⅰ. INTRODUCTION A kind of chemical wet process developed at the beginning of the seventies is the sol-gel method. Because of its lower synthesis temperature in inorganic materials, it is also called lowtemperature sy...Ⅰ. INTRODUCTION A kind of chemical wet process developed at the beginning of the seventies is the sol-gel method. Because of its lower synthesis temperature in inorganic materials, it is also called lowtemperature synthesis method. The sol-gel method has many obvious advantages compared with the high-temperature solid state reaction. On the one hand, the lower展开更多
基金Project supported by International Visegrad Fund (51000547 (2010-2011))
文摘Mixed strontium-yttrium borate phosphor Sr3Y2（BO3）4 doped with Eu^3＋ ions was obtained by the sol-gel Pechini method. Crystal structure of the synthesized compound was analyzed by X-ray powder diffraction. Optimal conditions for the synthesis were found. Photophysical properties of the phosphor samples were investigated by collecting excitation and luminescence spectra as well as measuring lumi- nescence lifetime. Judd-Ofelt analysis showed that Eu^3＋ ions occupied Y^3＋ sites in the crystalline network. The studied compound showed a red emission with the quantum yield of 54%-55% and can be potentially used as phosphor for plasma display panels and luminescent tubes.
基金Project supported by the National Natural Science Foundation of China.
文摘Ⅰ. INTRODUCTION A kind of chemical wet process developed at the beginning of the seventies is the sol-gel method. Because of its lower synthesis temperature in inorganic materials, it is also called lowtemperature synthesis method. The sol-gel method has many obvious advantages compared with the high-temperature solid state reaction. On the one hand, the lower
