制备的CsPb ((Cl/Br) 的制备方法
Chen Zhang1, Minqiang Wang1, Jindou Shi1
1Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education International Center for Dielectric Research and Shannxi Engineering Research Center of Advanced Energy Materials and Devices, Xi'an Jiaotong University, Xi'an, China.
Frontiers in chemistry
|June 5, 2023
概括
化矿矿的纳米晶体被整合到Eu3+合的TiO2空洞外中,产生稳定的白色发光二极管. 这种复合材料为矿设备提供了明亮的发射和改进的操作稳定性.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
- 固态化学 固态化学
背景情况:
- 化物矿 (CsPbX3) 纳米晶体 (NCs) 呈现出单个发射峰值,并经历快速的离子交换,限制了它们在白色发光二极管 (WLED) 中的使用.
- 复合结构可以增强矿的稳定性和被动表面缺陷,但复杂的后处理通常会导致NC溶解.
研究的目的:
- 开发一种稳定的CsPb(Cl/Br) 3/TiO2:Eu3+复合物,用于在没有额外处理的情况下直接使用白光激发.
- 为了提高基于矿的WLED的稳定性和性能.
主要方法:
- 在CsPb(Cl/Br) 3NCs的现场生长在Eu3+兴奋剂的TiO2空洞外中,使用修改后的热注入方法.
- 使用TiO2外作为Eu3+兴奋剂的基质,并作为对PL火分子的保护层.
主要成果:
- 这种CsPb ((Cl/Br) 3/TiO2:Eu3+复合物表现出直接的白光发射.
- 使用这些复合材料制造的WLED显示出明亮的白光,光效率为87.39lm/W,并增强了长期运行稳定性.
- TiO2空洞外有效地保护了CsPb(Cl/Br) 3NCs,防止了降解并保持了晶体结构.
结论:
- 在Eu3+添加剂的TiO2空洞中CsPb(Cl/Br) 3NCs的现场增长为开发稳定高效的矿基WLED提供了有前途的战略.
- 这种方法克服了单元矿NC和复杂的后处理方法的局限性.
- 复合材料为推进矿光电子设备提供了一个新的途径.
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