Negative differential resistance effect of blue phosphorene-graphene heterostructure device. (9th March 2020)

• Record Type: Journal Article
• Authors: Zhu, Si-Cong; Hu, Tie-Yi; Wu, Kai-Ming; Lam, Chi-Hang; Yao, Kai-Lun; Sun, Hua-Rui; Yip, Cho-Tung
• Is Part Of: Journal of physics communications. Volume 4:Number 3(2020)
• Publication Date: 2020-03-09
• Subjects: blue phosphorene -- graphene -- heterostructure -- negative differential resistance -- first principles; Physics -- Periodicals; 530.05
• DOI: 10.1088/2399-6528/ab7abd
• Languages: English
• ISSNs: 2399-6528

Abstract

Abstract: We report on the electrical transport properties of new graphene/blue phosphorene heterostructure devices by density functional theory (DFT) within the non-equilibrium Green's function (NEGF) approach. From the results, it is found that the devices with different length of contacts layers show semiconducting nature. The integrated contacted length of graphene/blue phosphorene two-layer device shows the best conductivity under a bias voltage. The negative differential resistance effect (NDR) is also found in the current-voltage curve of all the graphene/blue phosphorene devices. Transport characteristics can be explained by the eigenvalues of self-consistent Hamiltonian (MPSH). The results show that the device is fabricated from graphene/blue phosphorous and has good electrical conductivity. These interesting features will be useful for future electronic products.