Search results
Results from the WOW.Com Content Network
In graphs of the electronic band structure of solids, the band gap refers to the energy difference (often expressed in electronvolts) between the top of the valence band and the bottom of the conduction band in insulators and semiconductors. It is the energy required to promote an electron from the valence band to the conduction band.
An example of a Tauc plot for a transparent conducting oxide. A Tauc plot [1] is used to determine the optical bandgap, or Tauc bandgap, of either disordered [2] or amorphous [3] semiconductors.
<noinclude>[[Category:Bar chart templates]]</noinclude> to the end of the template code, making sure it starts on the same line as the code's last character. Pages in category "Bar chart templates"
Energy band gaps can be classified using the wavevectors of the states surrounding the band gap: Direct band gap: the lowest-energy state above the band gap has the same k as the highest-energy state beneath the band gap. Indirect band gap: the closest states above and beneath the band gap do not have the same k value.
The carrier density is usually obtained theoretically by integrating the density of states over the energy range of charge carriers in the material (e.g. integrating over the conduction band for electrons, integrating over the valence band for holes).
Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!
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 a certain crystal momentum (k-vector) in the Brillouin zone. If the k-vectors are different, the ...
AOL latest headlines, entertainment, sports, articles for business, health and world news.