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Study of Luminescent Characteristics of Bi~(3+) Excited Sr_2SiO_4 Phosphor

Xiong Zhi-jun

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Abstract

The Sr2SiO4∶Bi3+ phosphor was synthesized by sol-gel method.The X-ray diffraction pattern shows that the structure of Sr2SiO4∶Bi3+ phosphor well agrees with the Sr2SiO4 host.The emission and excitation spectra were investigated.The emission spectrum of Sr2SiO4∶Bi3+ phosphor shows one band centred at 441nm,and the excitation spectrum for 441nm emission has one band centred at 376nm.The effect of Bi3+ concentration on the emission spectrum of Sr2SiO4∶Bi3+ phosphor was researched.The results show that the emission peak intensity of Sr2SiO4∶Bi3+ phosphor firstly increases,then decreases with the increasing Bi3+ concentration,and reaches the maximum value at 3mol% Bi3+.With the condition of immitting the charge compensation,the emission peak intensity of Sr2SiO4∶Bi3+ is enhanced,and the effect is most distinctly with immitting Li+.

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What this paper is about

The Sr2SiO4∶Bi3+ phosphor was synthesized by sol-gel method.The X-ray diffraction pattern shows that the structure of Sr2SiO4∶Bi3+ phosphor well agrees with the Sr2SiO4 host.The emission and excitation spectra were investigated.The emission spectrum of Sr2SiO4∶Bi3+ phosphor shows one band centred at 441nm,and the excitation spectrum for 441nm emission has one band centred at 376nm.The effect of Bi3+ concentration on the emission spectrum of Sr2SiO4∶Bi3+ phosphor was researched.The results show that the emission peak intensity of Sr2SiO4∶Bi3+ phosphor firstly increases,then decreases with the increasing Bi3+ concentration,and reaches the maximum value at 3mol% Bi3+.With the condition of immitting the charge compensation,the emission peak intensity of Sr2SiO4∶Bi3+ is enhanced,and the effect is most distinctly with immitting Li+.

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Available abstract

The Sr2SiO4∶Bi3+ phosphor was synthesized by sol-gel method.The X-ray diffraction pattern shows that the structure of Sr2SiO4∶Bi3+ phosphor well agrees with the Sr2SiO4 host.The emission and excitation spectra were investigated.The emission spectrum of Sr2SiO4∶Bi3+ phosphor shows one band centred at 441nm,and the excitation spectrum for 441nm emission has one band centred at 376nm.The effect of Bi3+ concentration on the emission spectrum of Sr2SiO4∶Bi3+ phosphor was researched.The results show that the emission peak intensity of Sr2SiO4∶Bi3+ phosphor firstly increases,then decreases with the increasing Bi3+ concentration,and reaches the maximum value at 3mol% Bi3+.With the condition of immitting the charge compensation,the emission peak intensity of Sr2SiO4∶Bi3+ is enhanced,and the effect is most distinctly with immitting Li+.

Key concepts: Phosphor, Materials science, Emission spectrum, Luminescence, Emission intensity, Analytical Chemistry (journal), Excitation, Intensity (physics)

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