Crystal Growth and Optical Characterization of Large-sized Cerium-doped Lu1.6Y0.4SiO5

Abstract

Abstract: Cerium-doped Lu_1.6Y_0.4SiO₅ (LYSO) crystal with a dimension of φ60mm×110mm was grown by the Czochralski method. Advantages of LYSO Czochralski growth relative to LSO include reduced
melting point, less propensity for formation of crystalline inclusions, lower cost of starting material. Its optical transmission, excitation and emission
spectra of LYSO crystal were measured at room temperature. Results indicate that with the yttrium ion doping, absorption edge of LSO crystal is shifted
towards short wavelength. Three absorption bands of LYSO are formed, which assign to the Ce³⁺ 4f^1→5d¹ transitions at room temperature. The
Gaussian fits to the emission spectra of LYSO crystal excited with 358nm, show band characteristics with two peaks of 395 and 418nm, which assign to
Ce1 site, and with the emission peak at 435nm, to Ce2 site.

Key words: LYSO crystal, scintillator, Czochralski method, characterization

CLC Number:

O782

YAN Cheng-Feng,ZHAO Guang-Jun,ZHANG Lian-Han,XU Jun. Crystal Growth and Optical Characterization of Large-sized Cerium-doped Lu_1.6Y_0.4SiO₅[J]. Journal of Inorganic Materials.

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Crystal Growth and Optical Characterization of Large-sized Cerium-doped Lu_1.6Y_0.4SiO₅

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