Effect of Ligand Treatment on the Tuning of Infrared Plasmonic Indium Tin Oxide Nanocrystal Electrochromic Devices,Advanced Engineering Materials

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Effect of Ligand Treatment on the Tuning of Infrared Plasmonic Indium Tin Oxide Nanocrystal Electrochromic Devices
Advanced Engineering Materials ( IF 3.4 ) Pub Date : 2020-03-20 , DOI: 10.1002/adem.202000112
Oleksandr Mashkov ₁ , Julien Körfer ₁ , Andreas Eigen ₂ , Amir-Abbas Yousefi-Amin ₁ , Niall Killilea ₁ , Anastasiia Barabash ₁ , Mykhailo Sytnyk ₁ , Neamul Khansur ₃ , Marcus Halik ₂ , Kyle G. Webber ₃ , Wolfgang Heiss ₁

Affiliation

Electrochromic devices operating in the near infrared are being developed as a part of smart windows that can dynamically modulate visible light and heat transmittance of solar irradiation, dependent on weather conditions and personal preferences. Here, doped metal oxide nanocrystals are used to obtain the desired effect in the infrared spectral region. Specifically, the infrared transmittance is electrochemically modulated by control of the carrier concentration in the nanocrystals. While indium tin oxide nanocrystals are already known to provide this effect, the consequence of ligand treatment during preparation of the nanocrystal electrode on the electrochromic properties is studied. The type of ligand treatment is shown to affect the surface morphology, as well as the localized plasmon resonance energy of the nanocrystal films. A short and convenient treatment by ethanedithiol cross‐linking ligands is shown to provide superior results as compared with the formic acid treatment used in the previous work. Future work combining windows based on optimized electrochromic effects in the near infrared combined with those in the visible spectral range will simultaneously improve building energy efficiency and indoor human comfort.

中文翻译：

配体处理对红外等离子体氧化铟锡纳米晶体电致变色器件调谐的影响

正在开发在近红外中运行的电致变色设备作为智能窗户的一部分，该智能窗户可以根据天气条件和个人喜好动态调节可见光和太阳辐射的热传递率。在此，掺杂的金属氧化物纳米晶体用于在红外光谱区域中获得期望的效果。具体地，通过控制纳米晶体中的载流子浓度来电化学调制红外透射率。尽管已知铟锡氧化物纳米晶体可提供这种效果，但研究了在纳米晶体电极制备过程中配体处理对电致变色性能的影响。已显示出配体处理的类型会影响纳米晶体薄膜的表面形态以及局部等离振子共振能。与先前工作中使用的甲酸处理相比，乙二硫醇交联配体的简短便捷处理显示出了优异的结果。未来的工作结合了基于近红外优化电致变色效果的窗户与可见光谱范围内的窗户，将同时提高建筑的能效和室内人的舒适度。

更新日期：2020-03-20

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