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Temperature Gradient Designing and Optical Properties of SrI2 and SrI2:Eu Crystals Grown by Edge-Defined Film-Fed Growth (EFG) Method

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Abstract

In this work, SrI2 and SrI2:Eu5% single crystals with size of Ø10 × 60 mm3 and Ø10 × 30 mm3 were successfully grown by edge-defined film-fed growth (EFG) method. In the crystal growth process, the crack and turbidity of the crystal were solved by designing a temperature field, thereby optimizing crystal quality and obtaining crack-free crystals. X-ray diffraction analysis was performed on the grown crystals, and the optical properties of these crystals have been investigated at room temperature. Under the excitation of ultraviolet (UV) light, the crystals exhibit a single luminescence peak centered at 435 nm (λex = 350 nm), and the photoluminescence (PL) decay time is 0.594 μs. In addition, the designed temperature field also provides a reference value for other crystals grown by EFG method.

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Acknowledgments

The work was supported by the National Natural Science Foundation of China (Grant Numbers 51772171 and 51272130).

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Authors and Affiliations

  1. State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, Shandong, People’s Republic of China

    Qian Yao, Junying Zhang, Lintao Liu, Weimin Dong, Jing Li & Jiyang Wang

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  1. Qian Yao
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  2. Junying Zhang
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  3. Lintao Liu
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  4. Weimin Dong
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  5. Jing Li
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  6. Jiyang Wang
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Correspondence to Jing Li.

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Yao, Q., Zhang, J., Liu, L. et al. Temperature Gradient Designing and Optical Properties of SrI2 and SrI2:Eu Crystals Grown by Edge-Defined Film-Fed Growth (EFG) Method. J. Electron. Mater. 48, 991–996 (2019). https://doi.org/10.1007/s11664-018-6820-6

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  • DOI: https://doi.org/10.1007/s11664-018-6820-6

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