Plasmonic vanadium dioxide microbolometers with wavelength and polarisation sensitivity
Plasmonic vanadium dioxide microbolometers with wavelength and polarisation sensitivity
复制标题
具有波长和偏振灵敏度的等离子二氧化钒微测辐射热计
DOI：
10.1117/12.2320554
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发表时间：
2018
期刊：
影响因子：
--
通讯作者：
Kubo W
中科院分区：
文献类型：
--
作者：
Kubo W
非制冷微测辐射热光电探测技术是实现低成本、可靠和轻便的红外传感的关键技术，但与制冷光电探测器相比，其性能受到影响。引入新的微测辐射热计功能，如波长和偏振灵敏度，将提高当前器件的性能，并创造新的市场机会。一种方法是引入金属纳米结构，众所周知，金属纳米结构表现出对入射波长和偏振敏感的强局部表面等离子体共振（LSPR）。这项工作提出了集成的等离子体银纳米棒的材料二氧化钒VO2。VO2电阻率的抑制和透射光谱的下降之间的实验相关性进行了观察。随后的光学和热模拟的VO2薄膜，无论是在蓝宝石Al2O3和悬浮在空气中，演示如何LSPR驱动的电场增强导致局部加热周围的纳米棒和随后的纳米尺度上的温度分布。这项工作为基于二氧化钒的微测辐射热计的广泛光电探测功能开辟了道路。
Uncooled microbolometric photodetection is a key technology for low cost, reliable and lightweight infrared sensing but suffers in performance compared to cooled photodetectors. Introducing new microbolometer functionality such as wavelength and polarisation sensitivity will improve current device performance and encourage new market opportunities. One method is to introduce metallic nanostructures, which are widely known to exhibit strong localised surface plasmon resonances (LSPR) that are sensitive to incident wavelength and polarisation. This work presents the integration of plasmonic silver nanorods into the material vanadium dioxide VO2. An experimental correlation between suppression of VO2resistivity and dips in transmission spectra was observed. Subsequent optical and thermal simulations of VO2films, both on sapphire Al2O3and suspended in air, demonstrate how LSPR-driven electric field enhancement leads to localised heating around the nanorods and subsequent temperature distribution on the nanoscale. This work opens the path to a broad family of photodetection functionalities for vanadium dioxide-based microbolometers.
影响因子：
2.9
作者：
Pirozhenko, I.;Lambrecht, A.
通讯作者：
Lambrecht, A.