標題: Plasmonic Nanolasers Enhanced by Hybrid Graphene-Insulator-Metal Structures
作者: Li, Heng
Li, Jhu-Hong
Hong, Kuo-Bin
Yu, Min-Wen
Chun, Yi-Cheng
Hsu, Chu-Yuan
Yang, Jhen-Hong
Cheng, Chang-Wei
Huang, Zhen-Ting
Chen, Kuo-Ping
Lin, Tzy-Rong
Gwo, Shangjr
Lu, Tien-Chang
光電系統研究所
照明與能源光電研究所
影像與生醫光電研究所
光電工程學系
Institute of Photonic System
Institute of Lighting and Energy Photonics
Institute of Imaging and Biomedical Photonics
Department of Photonics
關鍵字: Nanolaser;surface plasmon;ZnO;nanowire;graphene
公開日期: 1-Aug-2019
摘要: Graphene is a two-dimensional (2D) structure that creates a linear relationship between energy and momentum that not only forms massless Dirac fermions with extremely high group velocity but also exhibits a broadband transmission from 300 to 2500 nm that can be applied to many optoelectronic applications, such as solar cells, light-emitting devices, touchscreens, ultrafast photodetectors, and lasers. Although the plasmonic resonance of graphene occurs in the terahertz band, graphene can be combined with a noble metal to provide a versatile platform for supporting surface plasmon waves. In this study, we propose a hybrid graphene-insulator-metal (GIM) structure that can modulate the surface plasmon polariton (SPP) dispersion characteristics and thus influence the performance of plasmonic nanolasers. Compared with values obtained when graphene is not used on an Al template, the propagation length of SPP waves can be increased 2-fold, and the threshold of nanolasers is reduced by 50% when graphene is incorporated on the template. The GIM structure can be further applied in the future to realize electrical control or electrical injection of plasmonic devices through graphene.
URI: http://dx.doi.org/10.1021/acs.nanolett.9b01260
http://hdl.handle.net/11536/152636
ISSN: 1530-6984
DOI: 10.1021/acs.nanolett.9b01260
期刊: NANO LETTERS
Volume: 19
Issue: 8
起始頁: 5017
結束頁: 5024
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