Introduction to electron volt
Electron volt, symbolized as eV, is the unit of energy. Represents the kinetic energy of an electron (negative charge with a charge of 1.6×10-19C) accelerated by a potential difference of 1 volt.
The conversion relationship between electron volts and SI units of energy unit Joule (J) is 1 eV = 1.6021766208(98)×10^-19 J