Analysis for coloration mechanism of reversible silver deposition-based electrochromic device by in situ observation of plasmonic nanoparticles with dark-field microscopy
Analysis for coloration mechanism of reversible silver deposition-based electrochromic device by in situ observation of plasmonic nanoparticles with dark-field microscopy
复制标题
通过暗场显微镜原位观察等离子体纳米颗粒分析基于可逆银沉积的电致变色器件的着色机制
DOI：
10.1016/j.solmat.2022.112119
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发表时间：
2023
影响因子：
6.9
通讯作者：
Kazuki Nakamura and Norihisa Kobayashi
中科院分区：
文献类型：
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作者：
Shun Uji;Shunsuke Kimura;Kazuki Nakamura and Norihisa Kobayashi
我们研究了一种基于银（Ag）沉积的电致变色（EC）器件，该器件可以可逆地呈现镜面、黑色、青色、洋红、黄色、绿色和透明状态。该系统中的显色是基于Ag电沉积物的局域表面等离子体共振（LSPR）。沉积的Ag纳米颗粒（AgNPs）的尺寸和形状对于器件着色是重要的。因此，有必要阐明在EC装置操作期间对应于AgNPs的形态的LSPR带变化以改善可着色性。在这项研究中，暗场显微镜（DFM）应用于原位观察银纳米粒子的LSPR的变化在可逆的银沉积电化学装置中的显色过程中的第一次。使用DFM的AgNP的光散射观察使得能够随时间分析LSPR带。所获得的光散射光谱提供了详细的信息，与传统的吸收光谱测量相比，在银沉积为基础的EC设备中的银纳米粒子诱导的LSPR。
We studied a silver (Ag) deposition-based multicolor electrochromic (EC) device that can represent mirror, black, cyan, magenta, yellow, green, and transparent states reversibly. The coloration in this system is based on localized surface plasmon resonance (LSPR) of Ag electrodeposits. The size and shape of deposited Ag nanoparticles (AgNPs) are important for device coloration. Therefore, it is necessary to elucidate the LSPR band change corresponding to the morphology of AgNPs during the EC device operation to improve the colorability. In this study, dark-field microscopy (DFM) was applied to in situ observation of the changes in LSPR of AgNPs at the coloration process in the reversible Ag deposition multicolor EC device for the first time. The light scattering observation of AgNPs using DFM enabled analysis of the LSPR band over time. The obtained light scattering spectra provide detailed information on the LSPR induced by AgNPs in Ag deposition-based EC devices in comparison with conventional absorption spectrum measurements.