Work

Field emission in diode and triode vacuum nanostructures

Year: 2025

Type: article

Abstract: This paper explores nanodiode and nanotriode structures with incorporated dielectric films in vacuum electronics. Such emission structures allow for very high (on the order of 1012A/m2 and more) current densities and differ greatly from conventional field emitters. For all structures considered, we derive the electrostatic Green’s function, construct potential barrier profiles, calculate tunneling coefficients, and determine the volt–ampere (VAC) characteristics, taking into account the distribution of electron energies. This work presents novel results, including a precise formula for the potential distribution in a structure with a dielectric film. This formula accounts for the finite conductivity of the semiconductor film and incorporates the reverse tunnel current within the structure. Considering this effect in nanostructures is crucial, particularly at low anodic voltages.

Source: Journal of Applied Physics

DOI: 10.1063/5.0251401

Authors: Michael V. Davidovich, Igor S. Nefedov, Ravil K. Yafarov

Institutions: Saratov State University, Peoples' Friendship University of Russia, Saratov Research Center, Kotelnikov Institute of Radioengineering and Electronics of the Russian Academy of Sciences

Language: English

Topic: Gyrotron and Vacuum Electronics Research

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $3,500

Funders: Ministry of Science and Higher Education of the Russian Federation, RUDN University