Silver Nanoantenna Stickers for Photoluminescence Control
Silver Nanoantenna Stickers for Photoluminescence Control
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DOI：
10.1021/acsaom.3c00024
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发表时间：
2023-03
期刊：
影响因子：
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通讯作者：
TienYang Lo;S. Murai;Katsuhisa Tanaka
中科院分区：
文献类型：
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作者：
TienYang Lo;S. Murai;Katsuhisa Tanaka
纳米天线贴纸将周期性的纳米颗粒阵列嵌入弹性体膜中，可以很容易地附着在目标材料的表面和从目标材料的表面分离，并作为纳米天线来控制光线。该贴纸可以通过纳米压印光刻和随后的转移工艺来制造。利用聚乙烯吡咯烷酮(PVP)作为牺牲层，在转移过程中溶解于水中制备了铝纳米天线贴片，但由于银与PVP之间的粘附性较弱，使得转移银纳米天线变得困难。在这项工作中，在银和PVP之间放置了一层薄的铝层，成功地将银纳米天线转移到弹性体膜中。我们通过在发光层上放置贴纸来演示光致发光的外耦合。发射图案以纳米天线贴纸定义的方式在空间和光谱上进行调制。与相同几何形状的铝纳米天线贴片相比，前向增强光致发光的能力更强。
Nanoantenna stickers, in which the periodic array of nanoparticles is embedded in an elastomer film, can be easily attached to and detached from the surface of target materials and work as nanoantennas to control light. The stickers can be fabricated by nanoimprint lithography followed by a transfer process. While aluminum nanoantenna stickers have been prepared with poly(vinylpyrrolidone) (PVP) as the sacrificial layer that is dissolved in water during the transfer process, it has been difficult to transfer the silver nanoantenna because of the weak adhesion between silver and PVP. In this work, upon placement of a thin aluminum layer between silver and PVP, a silver nanoantenna is successfully transferred into an elastomer film. We demonstrate a photoluminescence outcoupling by placing a sticker on the luminous layer. The emission pattern is modulated both spatially and spectrally in a way defined by the nanoantenna sticker. The ability to enhance photoluminescence in the forward direction is stronger than that of the aluminum nanoantenna sticker with an identical geometry.