Sm3+掺杂0.96Na0.5Bi0.5TiO3-0.04CaTiO3陶瓷的制备及光致发光性能研究

摘要/Abstract

摘要： 采用固相烧结法制备了一系列Sm³⁺掺杂0.96Na_0.5Bi_0.5TiO₃-0.04CaTiO₃(NBT-0.04CT∶xSm³⁺,0.002≤x≤0.020)无铅陶瓷。通过X 射线衍射仪表征样品的物相结构,所有样品均呈现单一钙钛矿结构。用荧光光谱仪测量样品的发光性能,样品在 479 nm处激发峰最强,可与白光LED合成中使用的蓝色LED芯片相匹配。发射主峰位于597 nm(⁴G_5/2→⁶H_7/9),呈现强橙红色发光。NBT-0.04CT∶0.010Sm³⁺陶瓷在Sm³⁺掺杂NBT-0.04CT陶瓷中的发光性能最佳,且在278~473 K陶瓷样品的发光性能呈现良好的热稳定性。结果表明,NBT-0.04CT∶xSm³⁺陶瓷在白光LED中具有广阔的应用前景。

关键词: 无铅陶瓷, 0.96Na_0.5Bi_0.5TiO₃-0.04CaTiO₃, Sm³⁺掺杂, 光致发光, 热稳定性

Abstract: A series of Sm³⁺-doped 0.96Na_0.5Bi_0.5TiO₃-0.04CaTiO₃ (NBT-0.04CT∶xSm³⁺, 0.002≤x≤0.020) lead-free piezoelectric ceramics were prepared by a conventional solid-state reaction method. The phase structures of the samples were characterized by X-ray diffractometry, and all the samples show a single perovskite structure. The photoluminescence properties of the samples were measured by fluorescence spectrophotometer, and the samples show the strongest excitation peak at 479 nm, which matches well with the blue LED chip used in the white LED synthesis. The dominant emission peak is located at 597 nm (⁴G_5/2→⁶H_7/9), presenting strong orange-red luminescence. NBT-0.04CT∶0.010Sm³⁺ ceramics shows optimal luminescence performances among the Sm³⁺-doped NBT-0.04CT ceramics, and superior thermal stability of its luminous properties is achieved in the temperature range from 278 K to 473 K. The results indicate that NBT-0.04CT∶xSm³⁺ceramics have promising applications in white LED.

Key words: lead-free ceramics, 0.96Na_0.5Bi_0.5TiO₃-0.04CaTiO₃, Sm³⁺ doping, photoluminescence, thermal stability

中图分类号:

马春林, 王梓珩, 范雨香, 胡颖, 胡亚洲. Sm³⁺掺杂0.96Na_0.5Bi_0.5TiO₃-0.04CaTiO₃陶瓷的制备及光致发光性能研究[J]. 人工晶体学报, 2023, 52(8): 1509-1515.

MA Chunlin, WANG Ziheng, FAN Yuxiang, HU Ying, HU Yazhou. Preparation and Photoluminescence Properties of Sm³⁺-Doped 0.96Na_0.5Bi_0.5TiO₃-0.04CaTiO₃ Ceramics[J]. JOURNAL OF SYNTHETIC CRYSTALS, 2023, 52(8): 1509-1515.

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Sm³⁺掺杂0.96Na_0.5Bi_0.5TiO₃-0.04CaTiO₃陶瓷的制备及光致发光性能研究

Preparation and Photoluminescence Properties of Sm³⁺-Doped 0.96Na_0.5Bi_0.5TiO₃-0.04CaTiO₃ Ceramics

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