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Moving the Plasmon of LaB6 from IR to Near-IR via Eu-Doping

机译:通过Eu掺杂将LaB6的等离子从IR移至近红外

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摘要

Lanthanum hexaboride (LaB6) has become a material of intense interest in recent years due to its low work function, thermal stability and intriguing optical properties. LaB6 is also a semiconductor plasmonic material with the ability to support strong plasmon modes. Some of these modes uniquely stretch into the infrared, allowing the material to absorb around 1000 nm, which is of great interest to the window industry. It is well known that the plasmon of LaB6 can be tuned by controlling particle size and shape. In this work, we explore the options available to further tune the optical properties by describing how metal vacancies and Eu doping concentrations are additional knobs for tuning the absorbance from the near-IR to far-IR in La1−xEuxB6 (x = 0, 0.2, 0.5, 0.8, and 1.0). We also report that there is a direct correlation between Eu concentration and metal vacancies within the Eu1−xLaxB6.
机译:六硼化镧(LaB6)由于其低的功函,热稳定性和吸引人的光学性能,近年来已成为人们关注的材料。 LaB6也是一种半导体等离激元材料,具有支持强等离激元模式的能力。这些模式中的某些模式独特地延伸到红外线中,从而使材料吸收约1000 nm的光,这对窗户行业非常感兴趣。众所周知,可以通过控制粒径和形状来调节LaB6的等离子体激元。在这项工作中,我们通过描述金属空位和Eu掺杂浓度是调节La1-xEuxB6(x = 0,0.2的从近红外到远红外)的吸光度的附加旋钮,来探索可用于进一步调谐光学特性的选项。 ,0.5、0.8和1.0)。我们还报告说,Eu1-xLaxB6中的Eu浓度与金属空位之间存在直接关系。

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