Fowler - Nordheim Plot Analysis : a Progress Report Richard
نویسندگان
چکیده
The commonest method of characterizing a cold field electron emitter is to measure its current-voltage characteristics, and the commonest method of analysing these characteristics is by means of a Fowler-Nordheim (FN) plot. This tutorial/review-type paper outlines a more systematic method of setting out the Fowler-Nordheim-type theory of cold field electron emission, and brings together and summarizes the current state of work by the authors on developing the theory and methodology of FN plot analysis. This has turned out to be far more complicated than originally expected. Emphasis is placed in this paper on: (a) the interpretation of FN-plot slopes, which is currently both easier and of more experimental interest than the analysis of FN-plot intercepts; and (b) preliminary explorations into developing methodology for interpreting current-voltage characteristics when there is series resistance in the conduction path from the high-voltage generator to the emitter's emitting regions. This work reinforces our view that FN-plot analysis is best carried out on the raw measured current-voltage data, without pre-conversion into another data format, particularly if series resistance is present in the measuring circuit. Relevant formulae are given for extracting field-enhancement-factor values from such an analysis.
منابع مشابه
The theoretical link between voltage loss , reduction in field enhancement factor , and Fowler - Nordheim - plot saturation Richard
متن کامل
Electron emission: From the Fowler-Nordheim relation to the Child-Langmuir law
Universal voltage-current characteristics are presented for a planar diode, showing the general transition from the Fowler-Nordheim relation to the Child-Langmuir law. These curves are normalized to the intrinsic scales that are constructed from the Fowler-Nordheim coefficients A, B. They provide an immediate assessment of the importance of the space charge effects, once the gap voltage, gap sp...
متن کاملField Electron Emission Theory ( October 2016 ) Richard
This conference paper provides an overview of the material presented in two field electron emission tutorial lectures given at the 2016 Young Researchers' School in Vacuum Microand NanoElectronics, held in Saint-Petersburg in October 2016. This paper aims to indicate the scope and structure of the tutorials, and also where some of the related published material can be found. Keywords—field elec...
متن کاملThe role of Hurst exponent on cold field electron emission from conducting materials: from electric field distribution to Fowler-Nordheim plots
This work considers the effects of the Hurst exponent (H) on the local electric field distribution and the slope of the Fowler-Nordheim (FN) plot when considering the cold field electron emission properties of rough Large-Area Conducting Field Emitter Surfaces (LACFESs). A LACFES is represented by a self-affine Weierstrass-Mandelbrot function in a given spatial direction. For 0.1 ≤ H < 0.5, the...
متن کاملSelf-powered Time-keeping and Synchronization using Fowler-Nordheim Tunneling based Floating-gate Integrators
Self-powered timers provide a mechanism to achieve temporal synchronization between two passive devices (for e.g. radio-frequency tags, credit/access cards, thumb drives) without the need for any external powering or clocks. As a result the timers could be used to implement dynamic SecureID type authentication involving random keys and tokens that need to be periodically generated and synchroni...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2016