期刊
ADVANCED FUNCTIONAL MATERIALS
卷 26, 期 35, 页码 6394-6401出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.201601779
关键词
-
类别
资金
- National Basic Research Program of China (973 Program) [2015CB932403]
- National Science Foundation of China [11374023, 61422501, 11674012, 61521004]
- Beijing Natural Science Foundation [L140007]
- Foundation for the Author of National Excellent Doctoral Dissertation of PR China [201420]
- National Program for Support of Top-notch Young Professionals
2D transition metal dichalcogenides are becoming attractive materials for novel photoelectric and photovoltaic applications due to their excellent optoelectric properties and accessible optical bandgap in the near-infrared to visible range. Devices utilizing 2D materials integrated with metal nanostructures have recently emerged as efficient schemes for hot electron-based photodetection. Metal-semiconductor heterostructures with low cost, simple procedure, and fast response time are crucial for the practical applications of optoelectric devices. In this paper, template-based sputtering method is used first to fabricate Au nanoantenna (NA)/MoS2 heterostructures with low cost, simple preparation, broad spectral response, and fast response time. Through the measurement of femtosecond pump-probe spectroscopy, it is demonstrated that plasmon-induced hot electron transfer takes place in the Au NA/MoS2 heterostructure on the order of 200 fs with an injected electron density of about 5.6 x 10(12) cm(-2). Moreover, the pump-power-dependent photoluminescence spectra confirm that the exciton energy of MoS2 can be enhanced, coupled, and reradiated by the Au NA. Such ultrafast plasmon-induced hot electron transfer in the metal-semiconductor heterostructure can enable novel 2D devices for light harvesting and photoelectric conversion.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据