Publication

On the electronic properties of the quasi-one-dimensional crystal Nb4Te17I4

Giorgio Margaritondo, László Forró, Helmuth Berger
1996
Journal Articles

Abstract

We studied the newly synthesized quasi-one-dimensional compound Nb4Te17I4. Resistivity measurements confirmed its pseudo-one-dimensional character and photoemission spectroscopy clarified the nature of its valence band states. This polytelluride is a narrow-gap semiconductor at room temperature, with a forbidden gap width of 0.34 eV.

Official source

https://infoscience.epfl.ch/entities/publication/9b87d93f-4b37-4193-8de3-a558e83fc900

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Giorgio Margaritondo, László Forró, Helmuth Berger
1996
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/9b87d93f-4b37-4193-8de3-a558e83fc900

About this result

Related concepts (13)

Electronic band structure

In solid-state physics, the electronic band structure (or simply band structure) of a solid describes the range of energy levels that electrons may have within it, as well as the ranges of energy that they may not have (called band gaps or forbidden bands). Band theory derives these bands and band gaps by examining the allowed quantum mechanical wave functions for an electron in a large, periodic lattice of atoms or molecules.

Band gap

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 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.

Valence and conduction bands

In solid-state physics, the valence band and conduction band are the bands closest to the Fermi level, and thus determine the electrical conductivity of the solid. In nonmetals, the valence band is the highest range of electron energies in which electrons are normally present at absolute zero temperature, while the conduction band is the lowest range of vacant electronic states. On a graph of the electronic band structure of a semiconducting material, the valence band is located below the Fermi level, while the conduction band is located above it.

Related publications (8)

On the electronic properties of the quasi-one-dimensional crystal Nb4Te17I4

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