News tagged with bandgap

Graphene origami opens up new spintronics features

(Phys.org) —Despite graphene's many impressive properties, its lack of a bandgap limits its use in electronic applications. In a new study, scientists have theoretically shown that a bandgap can be opened ...

Dec 19, 2013 feature
4.5 / 5 (13) 0 | with audio podcast

Graphene can emit laser flashes

Graphene is considered the jack-of-all-trades of materials science: The two-dimensional honeycomb-shaped lattice made up of carbon atoms is stronger than steel and exhibits extremely high charge carrier mobilities. ...

Oct 25, 2013
5 / 5 (16) 0 | with audio podcast

Researchers develop a way to funnel solar energy

(PhysOrg.com) -- Using carbon nanotubes (hollow tubes of carbon atoms), MIT chemical engineers have found a way to concentrate solar energy 100 times more than a regular photovoltaic cell. Such nanotubes could ...

Sep 12, 2010
4.7 / 5 (34) 15 | with audio podcast

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.

Jul 23, 2010
4.8 / 5 (18) 11 | with audio podcast

Bilayer graphene gets a bandgap

Graphene is the two-dimensional crystalline form of carbon, whose extraordinary electron mobility and other unique features hold great promise for nanoscale electronics and photonics. But there's a catch: ...

Jun 10, 2009
4.7 / 5 (6) 1