Electronic Properties and Optical Joint Density of States in Graphene Nanoribbons With Extended Nearest-Neighbour Interactions

Electronic Properties and Optical Joint Density of States in Graphene Nanoribbons With Extended Nearest-Neighbour Interactions

This study investigated the electronic properties and optical joint density of states (JDOS) of graphene nanoribbons (GNRs), with a specific focus on zigzag GNRs (ZGNRs) and armchair GNRs (AGNRs). Using the tight-binding method and MATLAB simulations, we analysed the impact of the first-, second- an...

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Bibliographic Details
Main Authors: Yuki Wong, Phing Yen Liew, Afiq Hamzah, Nurul Ezaila Alias, Tian Swee Tan, Mohammed Talal, Cheng Siong Lim, Michael Loong Peng Tan
Format: Article
Language:English
Published: Wiley 2025-01-01
Series:Journal of Nanotechnology
Online Access:http://dx.doi.org/10.1155/jnt/7988511
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Summary:This study investigated the electronic properties and optical joint density of states (JDOS) of graphene nanoribbons (GNRs), with a specific focus on zigzag GNRs (ZGNRs) and armchair GNRs (AGNRs). Using the tight-binding method and MATLAB simulations, we analysed the impact of the first-, second- and third-nearest-neighbour interactions on the band structure, DOS and JDOS of the GNRs. Our findings revealed that the ZGNRs exhibited metallic characteristics, whereas the AGNRs displayed semiconducting characteristics. The inclusion of higher-order interactions resulted in significant energy shifts and alterations in peak magnitudes, highlighting the intricate relationship between the structural geometry and electronic properties. The insights from this study are crucial for the advancement of nanoelectronic devices and highlight the significance of edge design in determining the electronic properties of GNRs. The comprehensive analysis provides a foundation for future investigations into the broader applications of GNRs, offering potential breakthroughs in nanoelectronics and the development of next-generation electronic devices. Further research is encouraged to explore these phenomena in more detail and harness the unique properties of GNRs for innovative technological applications.
ISSN:1687-9511

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