压力和速率依赖的机械发光具有最大的效率和可调节的波长在ZnS: Mn Mn中
Hao Wang1, Xiaohui Chen2, Junlong Li1,3
1Center for High Pressure Science and Technology Advanced Research (HPSTAR), Beijing 100094, China.
ACS applied materials & interfaces
|June 5, 2023
概括
在ZnS:Mn2+,Eu3+中的机械发光 (ML) 在千兆帕斯卡压力下显示出巨大的效率和色调调. 这一突破为先进的压力传感器和多色显示器提供了潜力.
科学领域:
- 材料科学 材料科学 材料科学
- 固态物理 固态物理
- 发光的光度是非常的低.
背景情况:
- 机械发光 (ML) 对应激感应和成像具有前景.
- 由于压力和加载率的限制,实现高ML效率是具有挑战性的.
研究的目的:
- 为了研究Mn2+和Eu3+联合合的ZnS中的压力和速率依赖的ML.
- 为了证明在千兆帕斯卡压力下可调整的ML效率和波长.
主要方法:
- 使用了一种高压动态钻石天电池 (DAC).
- 采用微秒时间解析的光方法.
- 结合高压X射线衍射和光发光.
主要成果:
- 观察到火山形的ML效率达到3.5GPa和211.1GPa/s,比MPa范围高出1000倍以上.
- 证明可调节的黄色到红色的发射颜色随着压力增加.
- 鉴定了压力诱导的压电场强化和增强的主机离子相互作用.
结论:
- ZnS:Mn2+,Eu3+在千兆帕斯卡级别表现出高效和可调的ML.
- 在压缩解压缩下可重现的ML表明了实际应用.
- 机械光学能量转换,动态压力成像,应力传感器和多色显示器的潜力.
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