In solid-state physics and solid-state chemistry, a band gap, also called a bandgap or energy gap, is an energy range in a solid where no electronic states exist.

In semiconductors, the band gap of a semiconductor can be of two basic types, a direct band gap or an indirect band gap. The minimal-energy state in the conduction band and the maximal-energy state in the valence band are each characterized by …

Semiconductor solid solutions such as GaAs 1-x P x have band gaps that are intermediate between the end member compounds, in this case GaAs and GaP (both zincblende structure). Often, there is a linear relation between composition …

Semiconductors are one of the technologically most important class of materials. According to the band theory of solids, which is an outcome of quantum mechanics, semiconductors possess a band gap, i.e., there is a range of forbidden energy values for the electrons and holes.

Data from Kittel, C., Introduction to Solid State Physics, 6th Ed., New York:John Wiley, 1986, p. 185.

Aug 2, 2019 · Optical bandgaps of amorphous Ge, Si, and GaAs films – as determined from different α(E) formulas [Eqs , and ] and different experimental methods: extrapolation (energy derivative) of the...

Jan 22, 2025 · Intermediate Band Gap Semiconductors. These materials have a band gap between 1 eV and 2 eV, offering a balance between high conductivity and the ability to withstand high temperatures. Silicon (Si), with a band gap of around 1.1 eV, is the most widely used semiconductor material.

For each HF+DFT method (B3LYP, PBE0, HSE06, and HF) compute the bandgap of Si adopting the following procedure: i) Perform a standard PBE calculation ii) Perform a HF+DFT run (VASP reads in the WAVECAR from run (i) iii) Calculate the value of the bandgap by running the script 'gap': bandgap = min(cband) - max(vband)

Mar 21, 2025 · Band gap plays a crucial role in silicon manufacturing. Here, we’ll go more in detail about what band gap is and how it affects semiconductors.

A key concept in understanding the properties and applications of silicon is the Forbidden Energy Gap, or Band Gap. This article explores the nature of the Forbidden Energy Gap, its significance, and how it pertains specifically to silicon semiconductors, including their …