Growth and Crystal Luminescence Properties of Cerium Doped Yttrium-Gadolinium Pyrosilicate

Abstract

Abstract: Novel cerium doped (Gd_0.99-xY_xCe_0.01)₂Si₂O₇ (x=0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7) (GYPS:Ce) scintillation crystals were grown by optical floating zone method, and phase identifications were carried out by X-ray diffraction (XRD). It belongs to orthorhombic of Pna21. Their photoluminescence (PL) and scintillation properties of as-grown crystals were characterized through vacuum ultra-violet (VUV) excitation and emission spectra, PL decay curves, X-ray excitation luminescence (XEL) spectra, γ-ray pulse height spectra. The emission peaks of VUV and XEL spectra all locate around 360 nm corresponding to 5d→4f transition. The PL decay time of as grown samples are in the range of 29.1 ns to 32.9 ns. The scintillation decay time components are in the range of 28 ns to 68 ns and 256 ns to 583 ns. There has energy transfer behavior of Gd³⁺→Ce³⁺ in crystal.

Key words: GYPS:Ce single crystal, floating zone method, optical property, scintillation crystal, decay time, photoluminescence

CLC Number:

O734

HUANG Shimin, WAN Huanhuan, YANG Fan, FENG He. Growth and Crystal Luminescence Properties of Cerium Doped Yttrium-Gadolinium Pyrosilicate[J]. JOURNAL OF SYNTHETIC CRYSTALS, 2021, 50(10): 1951-1956.

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