Role played by edge-defects in the optical properties of armchair graphene nanoribbons

Thi Nga Do, Godfrey Gumbs, Danhong Huang, Bui D. Hoi, Po Hsin Shih

研究成果: Article同行評審

1 引文 斯高帕斯(Scopus)

摘要

We explore the implementation of specific optical properties of armchair graphene nanoribbons (AGNRs) through edge-defect manipulation. This technique employs the tight-binding model in conjunction with the calculated absorption spectral function. Modification of the edge states gives rise to the diverse electronic structures with striking changes in the band gap and special flat bands at low energy. The optical-absorption spectra exhibit unique excitation peaks, and they strongly depend on the type and period of the edge extension. Remarkably, there exist the unusual transition channels associated with the flat bands for selected edge-modified systems. We discovered the special rule governing how the edge-defect influences the electronic and optical properties in AGNRs. Our theoretical prediction demonstrates an efficient way to manipulate the optical properties of AGNRs. This might be of importance in the search for suitable materials designed to have possible technology applications in nano-optical, plasmonic and optoelectronic devices.

原文English
文章編號3229
期刊Nanomaterials
11
發行號12
DOIs
出版狀態Published - 2021 12月

All Science Journal Classification (ASJC) codes

  • 化學工程 (全部)
  • 材料科學(全部)

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