Ags Ivana said:
The value of k for a semiconductor can be calculated using the equation k = (2π/λ)^2, where λ is the wavelength of the photon absorbed by the semiconductor.
The energy of an electron in a semiconductor can be calculated using the equation E = (h^2*k^2)/(2m), where h is Planck's constant, k is the wave vector, and m is the effective mass of the electron in the semiconductor.
The energy of a hole in a semiconductor is typically lower than that of an electron. This is because holes are essentially vacancies in the valence band, and therefore have less energy compared to an electron in the conduction band.
The energy of an electron in a semiconductor can be affected by various factors such as the type of semiconductor material, the presence of impurities, and external influences such as temperature and electric field.
The energy gap of a semiconductor can be determined experimentally by measuring the energy required to excite an electron from the valence band to the conduction band. This can be done using techniques such as photoluminescence or absorption spectroscopy.