| Gd3+掺杂Sc2W3O12∶Eu3+红色荧光粉的制备及其发光性能 |
| Gd3+-doped Sc2W3O12∶Eu3+ red phosphor: Preparation and luminescence performance |
| 作者 | 单位 | E-mail | | 赵炎 | 伊犁师范大学物理科学与技术学院, 凝聚态相变与微结构实验室, 伊宁 835000 | | | 王佳旭 | 伊犁师范大学物理科学与技术学院, 凝聚态相变与微结构实验室, 伊宁 835000 | | | 李忠辉 | 伊犁师范大学物理科学与技术学院, 凝聚态相变与微结构实验室, 伊宁 835000 | | | 刘长立 | 伊犁师范大学物理科学与技术学院, 凝聚态相变与微结构实验室, 伊宁 835000 | | | 赵星胜 | 伊犁师范大学物理科学与技术学院, 凝聚态相变与微结构实验室, 伊宁 835000 | | | 周恒为 | 伊犁师范大学物理科学与技术学院, 凝聚态相变与微结构实验室, 伊宁 835000 | zhw33221@163.com | | 蒋小康 | 伊犁师范大学物理科学与技术学院, 凝聚态相变与微结构实验室, 伊宁 835000 | jiangxiaokang@163.com |
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| 摘要: 采用溶胶-凝胶法制备 Eu3+离子掺杂 Sc2W3O12红色荧光粉，并通过 Gd3+掺杂降低 Sc2W3O12基质晶体结构的对称性，增强荧光粉的发光强度。结果显示，Gd3+的掺入并没有改变Sc2W3O12的晶体结构；随着Gd3+掺杂浓度的递增，晶格畸变加剧，来源于Eu3+的 5D0→7F2(612 nm)发光强度显著增强，Gd3+最佳掺杂浓度为 0.25，其发光强度为单掺 Eu3+的 1.95 倍，色坐标为(0.613 4，0.350 3)，与标准红光色坐标(0.670，0.330)较为接近。此外，荧光粉具有一定的热稳定性，即当温度达到498 K时，Gd3+离子掺杂浓度为0.25时制备的样品荧光强度与未掺杂Gd3+离子的样品相比得到了提升，是室温下的53%，其激活能为0.104 1 eV。 |
| 关键词: 溶胶-凝胶法 Sc2W3O12 红色荧光粉 Gd3+掺杂 |
| 基金项目: 伊犁师范大学研究生科研创新项目(No.YSD2024G004)资助。 |
| Abstract: A series of red-emitting phosphors, specifically Eu3+-doped Sc2W3O12, were synthesized using the sol-gel method. Furthermore, the symmetry of the Sc2W3O12 matrix crystal structure was diminished through Gd3+ doping, thereby enhancing the luminescence intensity of the phosphor. The findings indicate that incorporating Gd3+ did not alter the intrinsic crystal structure of Sc2W3O12. As the doping concentration of Gd3+ increased, the lattice distortion became more pronounced, resulting in a significant enhancement of the luminescence intensity corresponding to the 5D 0→7F2 transition (612 nm) from Eu3+. The optimal doping concentration of Gd3+ was determined to be 0.25, yielding a luminescence intensity that was 1.95 times greater than that of solely Eu3+-doped samples. Additionally, the color coordinates (0.613 4, 0.350 3) were near the standard red color coordinates (0.670, 0.330). Furthermore, the fluorescent powder exhibited notable thermal stability; specifically, when the temperature reached 498 K, the fluorescence intensity of the sample with a Gd3+ ion concentration of 0.25 was enhanced compared to that of undoped Gd3+ ions, achieving 53% of its value at room temperature. Additionally, its activation energy was measured at 0.104 1 eV. |
| Keywords: sol-gel method Sc2W3O12 red fluorescent powder Gd3+-doped |
| 投稿时间：2024-09-01 修订日期：2024-12-09 |
| 摘要点击次数: 59 |
| 全文下载次数: 18 |
| 赵炎,王佳旭,李忠辉,刘长立,赵星胜,周恒为,蒋小康.Gd3+掺杂Sc2W3O12∶Eu3+红色荧光粉的制备及其发光性能[J].无机化学学报,2025,41(3):461-468. |
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