新型Mn4+-激活K2Nb1-MoF7 (0 ≤ x ≤ 0.15) 固溶液红色,具有优越的抗潮性和良好的热稳定性
Yuhan Gao1, Lei Feng1, Linglin Wang1
1College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610066, China.
Molecules (Basel, Switzerland)
|June 10, 2023
概括
这项研究引入了新型的活性化红色 (K2Nb1-xMoxF7:Mn4+),用于白色发光二极管 (WLED) 的增强抗潮和发光. 开发的体显示出更好的稳定性和性能,为商业化铺平了道路.
科学领域:
- 材料科学 材料科学 材料科学
- 固态化学 固态化学
- 发光的光度是非常的低.
背景情况:
- 由于其发光特性, (Mn4+) 激活的化物红色对于白色发光二极管 (WLED) 来说至关重要.
- 现有的体的耐湿性较差,阻碍了它们的商业应用.
- 需要改进的红色光剂,提高WLED的稳定性和性能.
研究的目的:
- 设计和合成新型Mn4+活性化物固体溶液红色光体,以提高耐湿性.
- 研究Mo6+兴奋剂对K2NbF7:Mn4+的结构性,发光性和稳定性特性的影响.
- 为了评估在制造的白色发光二极管 (WLED) 装置中开发的光的性能.
主要方法:
- 使用共沉方法合成K2Nb1-xMoxF7:Mn4+ (0 ≤ x ≤ 0.15) 红色.
- 通过固体解决方案设计和收费补偿策略将Mo6+纳入.
- 的特性,包括发光,耐湿性,热稳定性和量子产量.
- 使用新型红色的WLED设备的制造和测试.
主要成果:
- 6+的注显著提高了K2NbF7:Mn4+无表面涂层的耐湿性.
- K2Nb1-xMoxF7:Mn4+ (x=0.05) 的量子产率为47.22%,在353K时保持69.95%的强度.
- 在沉浸1440分钟后,红色排放峰值 (627nm) 的强度保持在86.37%,超过了未使用的.
- 一个用制成的WLED设备实现了88的高颜色染指数 (CRI) 和3979 K的低相关色温 (CCT).
结论:
- 固体溶液设计和电荷补偿的双重策略有效地提高了Mn4+激活化物红色光体的耐湿性和发光度.
- 合成的K2Nb1-xMoxF7:Mn4+体表现出卓越的稳定性和有前途的性能,可用于WLED的实际应用.
- 开发的红色光体为提高WLED技术的性能和商业化提供了可行的解决方案.
相关概念视频
Photoluminescence: Applications
440
Photoluminescence offers a wide range of applications due to its inherent sensitivity and selectivity. This technique allows for both direct and indirect analyses of the analyte. Direct quantitative analysis is possible when the analyte exhibits a favorable quantum yield for fluorescence or phosphorescence. However, an indirect analysis may be feasible if the analyte is not fluorescent or phosphorescent, or if the quantum yield is unfavorable. Indirect methods include reacting the analyte with...
440
Qualitative Analysis
22.4K
For solutions containing mixtures of different cations, the identity of each cation can be determined by qualitative analysis. This technique involves a series of selective precipitations with different chemical reagents, each reaction producing a characteristic precipitate for a specific group of cations. Metal ions within a group are further separated by varying the pH, heating the mixture to redissolve a precipitate, or adding other reagents to form complex ions.
For instance, group IV...
For instance, group IV...
22.4K


