We demonstrate a simple, cost-effective method to enhance the photoluminescence intensity of monolayer MoS 2 . A hexagonal symmetric Au metasurface, made by polystyrene nanosphere lithography and metal coating, is developed to enhance the photoluminescence intensity of monolayer MoS 2 . By using nanospheres of different sizes, the localized surface plasmon resonances of the Au metasurfaces can be effectively tuned. By transferring monolayer MoS 2 onto the Au metasurface, the photoluminescence signal of the monolayer MoS 2 can be significantly enhanced up to 12-fold over a square-centimeter area. The simple, large-area, cost-effective fabrication technique could pave a new way for plasmon-enhanced light-mater interactions of atomically thin two-dimensional materials.

中文翻译：

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通过纳米球光刻模板化的金超表面等离子增强单层MoS2的光致发光

我们展示了一种简单，具有成本效益的方法来增强单层MoS 2的光致发光强度。通过增强聚苯乙烯纳米球的光刻技术和金属涂层技术，开发出六角对称的金超颖表面，以增强单层MoS 2的光致发光强度。通过使用不同大小的纳米球，可以有效地调谐Au超表面的局部表面等离振子共振。通过将单层MoS 2转移到Au超表面上，单层MoS 2的光致发光信号可以在平方厘米的面积上显着增强多达12倍。简单，大面积，具有成本效益的制造技术可以为原子薄的二维材料的等离子体增强光子相互作用铺平新的道路。