Optical characterization and emission enhancement property of Ag nanomesh structure fabricated by nanosphere lithography
Optical characterization and emission enhancement property of Ag nanomesh structure fabricated by nanosphere lithography
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DOI：
10.1016/j.surfcoat.2022.128258
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发表时间：
2022-02
影响因子：
5.4
通讯作者：
Mai Ugajin;Soyoung Park;T. Kiba;J. Takayama;S. Hiura;A. Murayama;M. Kawamura;Y. Abe
中科院分区：
文献类型：
--
作者：
Mai Ugajin;Soyoung Park;T. Kiba;J. Takayama;S. Hiura;A. Murayama;M. Kawamura;Y. Abe
具有规则排列的纳米尺寸孔的金属纳米网结构，在一定波长区域具有透光性和良好的导电性；因此，它可以应用于有机发光二极管（OLED）和太阳能电池等光学器件的波长选择电极。在这项研究中，制备了具有不同尺寸和周期的孔阵列的银纳米网结构，并评估了它们的电学和光学性能。 Alq3（一种用于 OLED 的绿光发光材料）沉积在制备的 Ag 纳米网上，并研究了其透射、散射和光致发光 (PL) 光谱。 Alq3 的 PL 强度大约是没有 Ag 纳米网的 PL 强度的四倍。时间分辨 PL 测量结果表明，所有具有 Ag 纳米网的样品中都存在短寿命成分，表明等离子体发射增强。这些结果表明银纳米网可以用作光学器件中的等离子体电极。
A metal nanomesh structure with regularly arranged nanosized holes has a light transmission property at a certain wavelength region and good conductivity; therefore, it can be applied to the wavelength-selective electrode of optical devices such as organic light-emitting diodes (OLEDs) and solar cells. In this study, Ag nanomesh structures with hole arrays of different sizes and periods were fabricated, and their electrical and optical properties were evaluated. Alq3, a green light-emitting material for OLEDs, was deposited on the fabricated Ag nanomesh, and its transmission, scattering, and photoluminescence (PL) spectra were investigated. The PL intensity of Alq3was approximately four times higher than that without the Ag nanomesh. Time-resolved PL measurements showed the presence of a short-lived component in all samples with Ag nanomesh, indicating plasmonic emission enhancement. These results indicate that Ag nanomeshes can be applied as plasmonic electrodes in optical devices.