We demonstrate a facile and effective approach to significantly improve the photoluminescence of bulk MoS₂ via laser thinning followed by gold particle decoration. Upon laser thinning of exfoliated bulk MoS₂, photoluminescence emerges from the laser-thinned region. After further treatment with an AuCl₃ solution, gold particles self-assemble on the laser-thinned region and thick edges, further increasing the fluorescence of bulk MoS₂ 28 times and the Raman response 3 times. Such fluorescence enhancement can be attributed to both surface plasmon resonance and p-type doping induced by gold particles. The combination of laser thinning and AuCl₃ treatment enables the functionalization of bulk MoS₂ for optoelectronic applications. It can also provide a viable strategy for mask-free and area-selective p-type doping on single MoS₂ flakes.

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我们展示了一种简便有效的方法，可通过激光减薄然后进行金颗粒装饰来显着改善块状MoS ₂的光致发光。在剥落剥落的块状MoS _2的激光薄化之后，光致发光从激光变薄的区域中出现。在用AuCl ₃溶液进一步处理后，金颗粒在激光变薄的区域和厚边缘上自组装，进一步使块状MoS ₂的荧光增强了28倍，拉曼响应提高了3倍。这种荧光增强可以归因于表面等离振子共振和金颗粒诱导的p型掺杂。激光薄化和AuCl ₃处理的组合使功能化的MoS ₂得以功能化用于光电应用。它还可以为单个MoS ₂薄片上的无掩模和区域选择性p型掺杂提供可行的策略。

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