揭示了 0D 无机金属化物 Cs2InCl5(H2O) 通过上转换发射介导的反热灭行为
Maohao Yang1, Wanyin Ge1, Toshiharu Teranishi2
1School of Materials Science and Engineering, School of Antiquities Preservation Science & Technology, Shaanxi University of Science and Technology, Xi'an 710021, Shaanxi, P. R. China.
Inorganic chemistry
|December 12, 2024
概括
研究人员开发了具有抗热火 (ATQ) 行为的无机金属化物 (IMHs),用于高温应用. 这种新材料显示了双模式发光和异常的ATQ,克服了传统IMH的局限性.
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:
- 无机金属化物 (IMHs) 通常表现出光热火,限制它们在高温下使用.
- 开发具有抗热火 (ATQ) 行为的IMH对于高温应用至关重要.
研究的目的:
- 合成具有抗热火 (ATQ) 性能的 0D 无机金属化物 (IMH).
- 为了研究杂IMHs的双模式发光和温度传感能力.
- 阐明观察到的ATQ行为背后的机制.
主要方法:
- 通过溶剂蒸发方法进行绿色合成,产生0D Cs2InCl5(H2O).
- 用Sb3+,Yb3+和Er3+进行兴奋剂,以实现双模式排放.
- 在现场进行结构分析,以研究高温相位过渡.
主要成果:
- 成功合成了0D Cs2InCl5(H2O) 与可调节的双模式发光 (下转换和上转换).
- 观察到的相对灵敏度值为7.11%K-1 (下转换) 和1.21%K-1 (上转换).
- 在上转换过程中表现出非常规的ATQ行为,与高温下结构过渡到Cs3In2Cl9有关.
结论:
- 0D Cs2InCl5(H2O) 表现出异常的ATQ行为,为高温发光应用提供了一条新的途径.
- 结构演化到Cs3In2Cl9被确定为负责ATQ的机制.
- 这项工作激发了多功能0D金属化物开发的灵感,用于先进的温度传感和发光.
更多相关视频
07:42Inkjet Printing All Inorganic Halide Perovskite Inks for Photovoltaic Applications
Published on: January 22, 2019
11.1K
06:53Author Spotlight: Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks
Published on: June 9, 2023
1.9K
相关概念视频
03:02Colors and Magnetism
11.5K
Color in Coordination Complexes
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human...
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human...
11.5K
02:58Crystal Field Theory - Octahedral Complexes
26.2K
Crystal Field Theory
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
26.2K