摘要: The Schottky model is extended through the use of the Thomas-Fermi approximation; the relevant differential equation for the electric scalar potential is solved and through it an estimate of the work function for metals is obtained.
Work function of simple metals: relation between theory and experiment - ScienceDirectTreating the metallic sample as a semi-infinite jellium, the work function may be expressed by an equation, where the local density approximation (LDA) is accepted. This expression consists of two terms. The ...
Work Function Changes of Metals as a Consequence of Immobile Gas Adsorption : Zeitschrift für Physikalische ChemieAn equation is derived to interpret the changes in the work function φ during immobile adsorption of gas molecules on metal surfaces up to a monolayer coverage. The equation accounts ...
Treating the metallic sample as a semi-infinite jellium, the work function may be expressed by an equation, where the local density approximation (LDA) is accepted. This expression consists of two terms. The first term "the surface dipole barrier" depends on the electron density profile n(x)...
Work Function of Metals A. Kiejna, in Encyclopedia of Interfacial Chemistry, 2018 The Definition of Work Function The work function is one of the most important physical properties of a crystal surface.1 The electronic work function is a positive quantity (the concept of work function applies al...
Here, a photovoltaic device based on a high-work-function metal/ single SWNT/low-work-function metal configuration was investigated. In this device, Pd and Al contacts were fabricated on opposite ends of a single SWNT to form p-type and n-type Schottky contacts, respectively, resulting in ...
work both sides of the street To engage in double-dealing; be duplicitous. work like a charm To function very well or have a very good effect or outcome. work (one's) fingers to the bone To labor extremely hard; toil or travail. ...
34can also be used in WFEHs. The key advantage of the work function energy harvester over the electrostatic energy harvester is the fact that the work function energy harvester does not need external power source or electret materials in the operation. In this sense the WFEH becomes closer to...
The voltage across the gap can be expressed as:(15)Vgap=u-Vbiwhere, u is the voltage between the work function energy harvester, and Vbi is the voltage in the thermodynamic equilibrium, i.e. Vbi=(ϕ1-ϕ2)e. Here ϕ are work function potentials of the metals and e is an ...
A fitting method based on Hermite splines allows us to deal with smooth functions instead of noisy data sets, improving the overall accuracy of the procedure. The IHF is obtained as a function of plastic strain for a set of strain rates for four materials: 303 and 316 stainless steels, ...