Optical Materials ( IF 3.9 ) Pub Date : 2021-09-13 , DOI: 10.1016/j.optmat.2021.111569 Shuai Wang 1 , Shiqi Zhao 1 , Zhitao Cheng 1 , Jie Wang 1 , Lei Li 1 , Yujie Nian 1 , Yingcui Fang 1, 2
Localized surface plasmon resonance (LSPR) of Ag nanoparticles (AgNPs) causes absorbance in the visible light range, and thus lowers the transmittance of Dielectric-Ag-dielectric (DAD) thin films. In this paper, the LSPR of AgNPs was successfully damped by tuning the deposition rate of the Ag layer and by adding a thin Cu layer. A transmittance spectrum as straight as a line paralleling to the x-axis with transmittance of 92.5% ± 0.5% in 440–800 nm and sheet resistance of 6.2Ω/□ were achieved. The electrode is highly stable in air. The mechanism of the improved optical electrical properties was explored via studying the initial growth of the thin films by transmission electron microscopy and was attributed to the reduced aspect ratio of the nanoparticles.
中文翻译:
抑制Ag纳米粒子的局域表面等离子体共振以获得电介质-Ag-电介质电极的超高和超均匀光学透射率
银纳米粒子 (AgNPs) 的局域表面等离子体共振 (LSPR) 会导致可见光范围内的吸收,从而降低电介质-银-电介质 (DAD) 薄膜的透射率。在本文中,通过调整 Ag 层的沉积速率和添加薄 Cu 层,成功地抑制了 AgNPs 的 LSPR。透射光谱像一条平行于 x 轴的直线,在 440-800 nm 范围内的透射率为 92.5% ± 0.5%,薄膜电阻为 6.2Ω/□。电极在空气中高度稳定。通过透射电子显微镜研究薄膜的初始生长,探索了改善光电性能的机制,这归因于纳米颗粒的纵横比降低。