Dual-Band Electrochromism: Plasmonic and Polaronic Mechanisms
Dual-Band Electrochromism: Plasmonic and Polaronic Mechanisms
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DOI：
10.1021/acs.jpcc.2c02155
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发表时间：
2022-05
期刊：
影响因子：
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通讯作者：
Bharat Tandon;Hsin-Che Lu;D. Milliron
中科院分区：
文献类型：
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作者：
Bharat Tandon;Hsin-Che Lu;D. Milliron
动态吸收入射太阳辐射的电致变色窗户被设想为智能技术设备，可以降低建筑物的功耗，加快可持续发展的进程。在调节室内空间中的可见光以适应居住者的舒适度的同时，电致变色窗户还通过控制太阳能（包括红外辐射）的通量来提供热控制。选择性地调制可见光和红外太阳透射率的能力被表示为双波段电致变色。双带控制可以通过采用当电化学充电时吸收不同光谱区域中的光的材料来实现，其中光吸收是由于极化或等离子体激元机制，这取决于充电条件。从这个角度来看，我们讨论了如何采用等离子体或极化方法可以影响电致变色器件的性能方面的不同的定量的数字的优点，以及在未来设计更好的双波段电致变色器件的挑战和机遇。
: Electrochromic windows that dynamically absorb incident solar irradiation are envisioned as smart technology devices that can reduce power consumption in buildings and accelerate progress toward sustainable development. While regulating the visible light in interior spaces to suite the comfort of occupants, electrochromic windows also offer thermal control by controlling the flux of solar energy, including infrared radiation. The ability to selectively modulate visible and the infrared solar transmittance is denoted as dual-band electrochromism. Dual-band control can be achieved by employing materials that absorb light in different spectral regions when electrochemically charged, with light absorption due to either a polaronic or a plasmonic mechanism, depending on the charging conditions. In this perspective, we discuss how adopting a plasmonic or a polaronic approach can affect the performance of an electrochromic device in terms of different quantitative figures-of-merit, and the challenges and opportunities for designing better dual-band electrochromic devices in the future.