A Electron transport study on ultrathin armchair graphene nanoribbone

Article history: Received: 17 JUN, 2019 Accepted: 29 AUG, 2019 Available Online: 25 DEC, 2019 Using first-principles quantum transport simulations, this work examines changes in the total electronic currents within the plane of short ultrathin graphene nanoribbon with armchair edges (AGNR). A 5AGNR-M (M = 4,12,20 and 28 zigzag line) junction was simulated and its transmission were analyzed. The I-V curves under external bias exhibit remarkable semiconducting characteristics. It further demonstrates that the length of the junction also showed significant effects in the determination of the semiconducting nature. More importantly, a significant increasing by double in bias voltage threshold of I–V characteristics have been observed for the positively charged nanoribbon in the family of 5-AGNRs. DOI: http://dx.doi.org/10.31257/2018/JKP/2019/110209 K e y w o r d s : Electron transport ultrathin armchair graphene nanoribbone tight-binding approximation نيفاركنا نم قيض يونان طيرش للاخ تانورتكنلاأ لاقتنأ ةسارد