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Part 1212-24.1

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Part 12: Condensed Matter·60 entries

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Section 12-242 entries

12-24.1work function 12-24.2ionization energy

12-24.1

work function

URNurn:iso:std:iso:80000:-12:ed-2:en:item:12-24.1

Download RDF.jsonld .ttl

https://metanorma.github.io/isq-smart/quantities/part-12/t12-24.1
urn:iso:std:iso:80000:-12:ed-2:en:item:12-24.1

ISQ Identifiers

ISO

urn:iso:std:iso:80000:-12:ed-2:en:item:12-24.1

IEC

urn:iec:std:iec:80000-12:2019:::item:12-24.1

Designations

ENwork function

FRtravail d'extraction

Symbol

ϕ

Notation systems

Rendered

ϕ

AsciiMath

phi

LaTeX

\phi

Definition

difference between energy (ISO 80000-5: Thermodynamics) of an electron at rest at infinity and the Fermi energy (Fermi energy)

différence entre l'énergie (ISO 80000-5: Thermodynamics) d'un électron au repos situé à l'infini et l'énergie de Fermi (Fermi energy)

Units

J

joule

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e V

electronvolt

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k g \cdot m^{2} \cdot s^{- 2}

kilogram square metre per second squared

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Notes

The term "energy level" is often used for the state of the electron, not only for its energy.

The contact potential difference between substances a and b is given by

V_{a} - V_{b} = \frac{ϕ_{a} - ϕ_{b}}{e}

where $e$ is the elementary charge (ISO 80000-1).

A set of energy levels, the energies of which occupy an interval practically continuously, is called an energy band.

In semi-conductors $E_{d}$ and $E_{a}$ are used for donors and acceptors, respectively.

Le terme « niveau d'énergie » est souvent utilisé pour l'état de l'électron, et pas seulement pour son énergie.

La différence de potentiel de contact entre les substances a et b est donnée par

V_{a} - V_{b} = \frac{ϕ_{a} - ϕ_{b}}{e}

où $e$ est la charge élémentaire (ISO 80000-1).

Un ensemble de niveaux d'énergie dont les énergies occupent un intervalle pratiquement continu est appelé bande d'énergie.

Dans les semi-conducteurs $E_{d}$ et $E_{a}$ sont utilisés respectivement pour les donneurs et les accepteurs.

Referenced by

Richardson constant

Concept HierarchyPendrill (2024)

L² M T⁻²energy-type quantitiesLevel 0 · Kind

Broader concepts

◇ energy-type quantities

Characterizes

● electron

Ontology
isq:Quantity smart:TermEntry

Class Hierarchy

smart:Entity smart:TermEntryisq:Quantity

A physical quantity as defined in ISO/IEC 80000, with associated symbols, definitions, and units of measurement.

Instance IRI

isq:t12-24.1

Properties

isq:QuantityShape

Property	Value
rdf:type	isq:Quantity smart:TermEntry
dcterms:identifier	12-24.1
skosxl:prefLabel	"work function"@en
skosxl:altLabel	"phi"@en
skos:definition	difference between energy (<<iso80000-5>>) of an electron at rest at infinity and the Fermi energy (<<t12-27.1>>)
skos:note	The term "energy level" is often used for the state of the electron, not only for its energy. The contact potential dif…
isq:hasUnit	J (joule)eV (electronvolt)kgm^2s^(-2) (kilogram square metre per second squared)
isq:hasDimension	isq:Dimension
smart:hasBindingnessType	bindingness-type:normative
dcterms:isPartOf	isq:part-12

Related Entities

isq:QuantityShape isq:part-12 isq:Unit isq:Dimension isq:hasDimension smart:TermEntry

Definition

Units

Notes

Referenced by

Broader concepts

Characterizes

Ontology isq:Quantitysmart:TermEntry

Class Hierarchy

Instance IRI

Properties

Related Entities

Ontology
isq:Quantity smart:TermEntry