Programme

P.87 -- Poster, VCTP-44

Date: Thursday, 1 August 2019

Time: 08:30 - 10:00

Diverse Electronic Transport of Sawtooth Penta-Graphene Nanoribbons by Substitutional Doping

Pham Thi Bich Thao (1) (2), Vo Trung Phuc (1), Tran Thi Ngoc Thao (1), Ngo Vu Hao (1), and Nguyen Thanh Tien (1)

(1) Department of Physics, College of Natural Science, Can Tho University (2) Graduate University of Science and Technology, Vietnam Academy of Science and Technology.

Electronic and transport properties of the sawtooth penta-graphene nanoribbons (SPGNRs) doping by various doped-atoms (Si, N, P) and at various sites are systematically investigated by using the density-functional theory in combination with the non-equilibrium Green’s function formalism. To explore in detail the electronic and transport features, we compute and discuss about the structure properties, band structure, density of states, I-V curve, and transmission spectrum. Our result shows that doping affects dramatically on the electronic feature and the I-V characteristic of samples. The current intensity of N-SSPGNR and P-SSPGNR increase by 8 orders of magnitude compared to that of SSPGNR while the one of Si-SSPGNR has negligible change. Moreover, our results also show that electronic structures and currents of the studied samples will be strongly effected by doping position. Our findings indicate that doping can effectively modulate the electronic and the transport properties of SSPGNRs, which has not been studied so far.

Presenter: Pham Thi Bich Thao