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白光LED用Ba6Gd2Ti4O17:Sm3+红色荧光粉的制备及发光性能研究
发表时间：2020-03-31 浏览量：1799 下载量：218
| 全部作者： | 洪俊宇，梁琼云，王运锋，石建新，吴明娒 |
| 作者单位： | 中山大学化学学院，生物无机与合成化学教育部重点实验室 |
| 摘 要： | 采用传统的高温固相法制备一种新型的红色荧光粉Ba6Gd2Ti4O17:Sm3+，并通过X射线衍射（X-ray diffraction，XRD）、扫描电子显微镜（scanning electron microscope，SEM）、荧光（photoluminescence，PL）光谱及色坐标表征系列样品的物相、形貌和发光性能。PL光谱表明该荧光粉可以被近紫外光有效激发，在407 nm近紫外光激发下，发射光谱由四个发射峰组成，最强发射峰位于616 nm处，归结为Sm3+的4G5/2→6H7/2跃迁。随着Sm3+掺杂量的增加，荧光粉的发光强度先增大后减小，最佳掺杂比例（物质的量分数）为3%. 系列掺杂比例荧光粉的色坐标基本不变，均位于红光区。研究结果表明，该荧光粉是一种具有应用前景的新型白光发光二极管（light-emitting diode，LED）用红色荧光粉。 |
| 关 键 词： | 无机化学；白光LED；红色荧光粉；高温固相法；Ba6Gd2Ti4O17:Sm3+ |
| Title： | Study on synthesis and luminescent properties of Ba6Gd2Ti4O17:Sm3+ red phosphor for white LED |
| Author： | HONG Junyu, LIANG Qiongyun, WANG Yunfeng, SHI Jianxin, WU Mingmei |
| Organization： | MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-sen University |
| Abstract： | A novel red phosphor Ba6Gd2Ti4O17:Sm3+ was synthesized by a traditional high temperature solid-state reaction. The phase, morphology and luminescent properties of the prepared samples were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), photoluminescence (PL) spectroscopy and color coordinate. The PL spectroscopy indicated that the phosphor could be effectively excited by near-ultraviolet light. Under 407 nm excitation near-ultraviolet light, the emission spectrum consisted of four emission peaks. The strongest emission peak at 616 nm was attributed to 4G5/2→6H7/2 transition of Sm3+. With the increase of Sm3+ doping amount, the luminescent intensity of the phosphor firstly increased and then decreased. The optimum doping ratio (mole percentage) of Sm3+ ions in Ba6Gd2Ti4O17:Sm3+ was 3%. The color coordinates of the series doping ratio samples located in the red region were basically unchanged. The results show that the Ba6Gd2Ti4O17:Sm3+ phosphor exhibits a great potential to be used as red fluorescent material for application in based white light-emitting diode (LED). |
| Key words： | inorganic chemistry; white LED; red phosphor; high temperature solid-state reaction; Ba6Gd2Ti4O17:Sm3+ |
| 发表期数： | 2020年3月第1期 |
| 引用格式： | 洪俊宇，梁琼云，王运锋，等. 白光LED用Ba6Gd2Ti4O17:Sm3+红色荧光粉的制备及发光性能研究[J]. 中国科技论文在线精品论文，2020，13（1）：53-57. |
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