Highly Enhanced Photoluminescence of Monolayer MoS2 in Plasmonic Hybrids with Double-Layer Stacked Ag Nanoparticles
Highly Enhanced Photoluminescence of Monolayer MoS2 in Plasmonic Hybrids with Double-Layer Stacked Ag Nanoparticles
复制标题
双层堆叠银纳米粒子等离激元杂化物中单层 MoS2 的高度增强光致发光
DOI：
10.1021/acsami.1c21960
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发表时间：
2022-03-16
影响因子：
9.5
通讯作者：
Yang, Yang
中科院分区：
文献类型：
--
作者：
Pan, Ruhao;Kang, Jianyu;Yang, Yang
本文提出了一种制备具有高光致发光（PL）增强的二硫化钼基等离子体杂化体系的可行方法。在不同结构的MoS 2/Ag球形纳米粒子（SP）杂化体系中，通过改变Ag SP的堆积位置，系统地研究了等离子体杂化对MoS 2光致发光的增强效应.结果表明，由单层MoS 2和两层Ag SPs之间的介电Al 2 O3层组成的类双金属混合物具有最高的PL增强。值得注意的是，在MoS 2下添加Al 2 O3层后，在类铌酸锂混合体系中实现了高达209倍的PL强度增强。与单层SPs的杂化体系相比，双层Ag SPs的杂化体系由于MoS 2中A（0）激子的选择性增强而表现出明显的蓝移.这些结果表明，MoS 2/Ag SP杂化纳米系统对传感和光电子器件具有重要意义。
In this work, a feasible method was proposed to prepare MoS2-based plasmonic hybrid systems with high photo-luminescence (PL) emission enhancement. The enhancement effect of plasmonic hybrids on the PL emission of MoS2 has been systematically studied on MoS2/Ag spherical nanoparticle (SP) hybrid systems with different architectures by changing the stacking position of Ag SPs. It is demonstrated that the sandwich-like hybrid composed of monolayer MoS2 and dielectric Al2O3 layer between two layers of Ag SPs has the highest PL enhancement. Remarkably, after adding an Al2O3 layer under MoS2, the PL intensity enhancement up to 209 times was achieved in the sandwich-like hybrid system. Compared with the hybrid with single-layer SPs, the sandwich-like hybrid system with double-layer Ag SPs exhibited an obvious blue shift as a result of the selective enhancement of the A(0) exciton in MoS2. These results demonstrate that MoS2/Ag SP hybrid nanosystems have significant implications for sensing and photoelectronic devices.