News tagged with valence band

Explained: Bandgap

Why do some materials work well for making solar cells or light-emitting diodes (LEDs), while other materials don't? One key factor is having the right bandgap.

dateJul 23, 2010 in General Physics
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Blocking infinity in a topological insulator

(Phys.org)—In bulk, topological insulators (TIs) are good insulators, but on their surface they act as metals, with a twist: the spin and direction of electrons moving across the surface of a TI are locked ...

dateFeb 08, 2013 in Nanomaterials
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