Tailoring Optical Properties in Transparent Highly Conducting Perovskites by Cationic Substitution
Tailoring Optical Properties in Transparent Highly Conducting Perovskites by Cationic Substitution
复制标题
通过阳离子取代调整透明高导钙钛矿的光学性能
DOI：
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发表时间：
2022
期刊：
影响因子：
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通讯作者：
L. Alff
中科院分区：
文献类型：
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作者：
M. Mohammadi;Ruiwen Xie;Niloofar Hadaeghi;A. Radetinac;A. Arzumanov;P. Komissinskiy;Hongbin Zhang;L. Alff
SrMoO 3、SrNbO 3和SrVO 3是显著的高导电性d1（V，Nb）或d2（Mo）钙钛矿金属，在可见光中具有固有的高透明度。一个关键的科学问题是如何操纵这些材料的光学特性，使它们适合用作透明电极和等离子体。这里，示出了钙钛矿中的3d/4d阳离子取代如何调整相关材料参数，即，光学跃迁能量和等离子体频率。以固态溶液SrV 1 − xMoxO 3为例，研究表明，吸收和反射边缘可以移动到可见光谱的边缘，由于其极低的薄层电阻，这种材料有可能超过氧化铟锡（ITO）。当x = 0.5时，当电阻率为32 µΩ cm（12 Ω sq−1）时，整个可见光谱的透过率大于84%。实验和电子结构计算的定量比较表明，等离子体频率的移动是由d带填充和电子关联的相互作用决定的。这项研究推进了对可持续透明导体和紧急等离子体的特殊类别的高导电钙钛矿的知识。
SrMoO3 , SrNbO3, and SrVO3 are remarkable highly conducting d1 (V, Nb) or d2 (Mo) perovskite metals with an intrinsically high transparency in the visible. A key scientific question is how the optical properties of these materials can be manipulated to make them suitable for applications as transparent electrodes and in plasmonics. Here, it is shown how 3d/4d cationic substitution in perovskites tailors the relevant materials parameters, i.e., optical transition energy and plasma frequency. With the example of the solid‐state solution SrV1−xMoxO3, it is shown that the absorption and reflection edges can be shifted to the edges of the visible light spectrum, resulting in a material that has the potential to outperform indium tin oxide (ITO) due to its extremely low sheet resistance. An optimum for x = 0.5, where a resistivity of 32 µΩ cm (≈12 Ω sq−1) is paired with a transmittance above 84% in the whole visible spectrum is found. Quantitative comparison between experiments and electronic structure calculations show that the shift of the plasma frequency is governed by the interplay of d‐band filling and electronic correlations. This study advances the knowledge about the peculiar class of highly conducting perovskites toward sustainable transparent conductors and emergent plasmonics.