The Work Function Is The Minimum Amount Of Energy That Must Be Possessed By Incident Radiation To Liberate Electrons From The Metal Surface And Is Given By ⇒ Φ = Hν.
Jump to navigation jump to search. The work function of a metal is 2 e v. The minimum energy needed to eject an electron from a metal is known as the work function of the metal.
The Photoelectric Work Function Of Platinum Is 6.3 Ev And The Longest Wavelength That Can Eject Photoelectron From Platinum Is 1972 Å.
If a radiation of wavelength 3 0 0 0 a ˚ is incident on it, the maximum kinetic energy of the emitted photoelectrons is : Where h = plancks constant,ν = frequency of the incident radiation Gap.12 the work function locating p(si) is 4.66 ev and is 0.19 ev less that the work function locating the surf ace state band of the si(lll) surface.
The Graphite With An Energy Gap Close To 0 Ev And A Work Function Of About 4.2−5.2 Ev [43] Can Form With Ruo2, With An Energy Gap Equal To 2.6−2.9.
According to einstein's equation, the metals which will emit photoelectrons for a. In the present paper, the electronegativity equalization formula given by komorowski4 is adapted to the estimation of silicide work functions using the metal work function ~~ and the silicon. (hopg), which after cleavage has a work function of about 4.6 ev.
Since Hopg Usually Does Not Form Interface Dipoles, Even The Presence Of Typical Ambient Contamination Does Not Change The Work Function Significantly.
Reasons for such unusual behavior have been discussed. What is work function measured in? The work functions for metals a, b and c are respectively 1.92 ev, 2.0 ev, and 5 ev.
The Value Of The Work Function Is Equal To The Energy Of The Electron Revolving Around The Nucleus.
• the “true work function” of a uniform surface of an electronic conductor is defined as the difference between the electrochemical potential of the electrons just inside the conductor, and the electrostatic 6 × 1 0 − 3 4 j s; How is ev work function calculated?