SCINTILLATOR AND PREPARATION METHOD THEREFOR

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A scintillator, a preparation method therefor, and an application thereof are disclosed. According to one example of the present invention, the scintillator has a chemical formula of TlaAbBc : yCe, wherein : A is at least one rare earth element selected from trivalent rare earth elements; B is at least one halogen element selected from halogen elements; a=1, b=2 and c=7, a=2, b=1 and c=5, or a=3, b=1 and c=6; and y is greater than or equal to 0 and less than or equal to 0.5. According to the example of the present invention, the scintillator has high detection efficiency for radioactive rays, high light yield, and an excellent fluorescence decay time characteristic. According to another example of the present invention, the scintillator has a chemical formula of TlaAbBc : yEu, wherein : A is an alkaline earth metal element; B is a halogen element; a=1, b=2 and c=5, or a=1, b=1 and c=3; and y is greater than or equal to 0 mol% and less than or equal to 50 mol%. According to the other example, the scintillator has high detection efficiency for X-rays and gamma rays and exhibits an excellent scintillation characteristic in which light yield is great since Eu is added as an activator.