10纳米间距的银纳米二元增强MoS2的荧光 (AOM 实验文章) - 微米和纳米 - 前沿热点

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Boosting the photoluminescence of monolayer MoS2 on high-density nanodimer arrays with sub-10 nm gap

Qi Hao,# Jinbo Pang,# Yang Zhang, Jiawei Wang, Libo Ma, Oliver G. Schmidt
# contributed equally
Advanced Optical Materials, 1700984, 2017

Patterned plasmonic nanodimers are fabricated exploiting an ultrathin porous anodic aluminum oxide membrane as a mask during angle-resolved shadow deposition. The fabricated nanodimer arrays exhibit consistent sub-10 nm gaps and a high particle density up to 1.0 × 1010 cm−2 over a large area. The ultrasmall dimer gaps provide highly confined electromagnetic fields, which strongly enhance the photoluminescence (PL) emission and Raman scattering from the surrounding monolayer molybdenum disulphide (MoS2). The ensemble PL intensity from MoS2/dimers is enhanced by up to a factor of ≈160 by resonant excitation of the dimer modes. Anisotropic polarization-dependent characteristics of PL and Raman from the MoS2/dimers confirm that the dominant enhancement originates from the dimer configuration. These experiments demonstrate a facile approach for the fabrication of low-cost high-performance 2D material-based optoelectronic devices.

http://onlinelibrary.wiley.com/doi/10.1002/adom.201700984/full[ Last edited by alexanderp on 2017-12-25 at 11:25 ]

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附件 1 : Boosting_the_Photoluminescence_of_Monolayer_MoS2_on_High-Density_Nanodimer_Arrays.pdf

2017-12-25 11:08:03, 1.64 M