Ca_(2-x)Sr_(x)MgSi_(2)O_(7):Eu^(3+)荧光粉的制备及光致发光性能研究

Study on Preparation and Luminescence Properties of Ca_(2-x)Sr_(x)MgSi_(2)O_7:Eu^(3+)Red Phosphors

采用高温固相法制备了Ca_(2-x)Sr_(x)MgSi_(2)O_(7):Eu^(3+)红色荧光粉,利用X射线衍射仪、荧光光谱仪等对样品进行分析表征,探究Eu^(3+)掺杂于Ca_(2-x)Sr_(x)MgSi_(2)O_(7)基质的光致发光性能。结果表明:Eu^(3+)的掺杂没有改变Ca_(2-x)Sr_(x)MgSi_(2)O_(7)基体的晶体结构,Ca_(2-x)Sr_(x)MgSi_(2)O_(7):Eu^(3+)荧光粉在410nm光激发下最强发射峰位于580nm的红光,Eu^(3+)掺杂量为4%时发光强度最高,Ca_(2-x)Sr_(x)MgSi_(2)O_(7):Eu^(3+)荧光粉可用于补充白光LED所需要的红色部分。

Ca_(2-x)Sr_(x)MgSi_(2)O_7:Eu^(3+)red phosphors were prepared using high-temperature solid-phase method.The samples were characterized and analyzed by X-ray diffractometry and fluorescence spectrometry,and the photoluminescence properties of the Eu^(3+)-doped Ca_(2-x)Sr_(x)MgSi_(2)O_(7) matrix were explored.The results showed that the doping of Eu^(3+)did not change the crystal structure of the Ca_(2-x)Sr_(x)MgSi_2O_(7)matrix.Under light excitation of 410 nm,the highest emission peak of the Ca_(2-x)Sr_(x)MgSi_(2)O_(7):Eu^(3+)phosphor was located at 580 nm in the red-light region,and the highest emission intensity was achieved when the Eu^(4+)dosage was 4%.Ca_(2-x)Sr_(x)MgSi_(2)O_(7):Eu^(3+)red phosphors can be used to supplement the red-light component that white-light LEDs need.