News tagged with band gap

Nanoribbons for graphene transistors

In the recent issue of Nature, European scientists from Empa and the Max Planck Institute for Polymer Research report how they have managed for the first time to grow graphene ribbons that are just a few ...

Jul 21, 2010
4.8 / 5 (14) 0 | with audio podcast

New alloys key to efficient energy and lighting

A recent advance by Arizona State University researchers in developing nanowires could lead to more efficient photovoltaic cells for generating energy from sunlight, and to better light-emitting diodes (LEDs) that could replace ...

Mar 22, 2010
4 / 5 (6) 0 | with audio podcast

Researchers make graphene hybrid

Rice University researchers have found a way to stitch graphene and hexagonal boron nitride (h-BN) into a two-dimensional quilt that offers new paths of exploration for materials scientists.

Mar 01, 2010
4.6 / 5 (10) 1 | with audio podcast

Can graphene nanoribbons replace silicon?

(PhysOrg.com) -- "Graphene has been the subject of intense focus and research for a few years now," Philip Kim tells PhysOrg.com. "There are researchers that feel that it is possible that graphene could replac ...

Feb 18, 2010 feature
4.2 / 5 (30) 1 | with audio podcast

Using CNTs as infrared sensors

(PhysOrg.com) -- Semiconductors provide the bases for many different avenues of device research. Indeed, many of the technological devices that are commonplace in our society are reliant on semiconductors. However, as we ...

Jan 04, 2010 feature
4.4 / 5 (16) 0 | with audio podcast

Highlight: Solar - Bridging the gap

(PhysOrg.com) -- Titanium dioxide, the same inexpensive white pigment that protects us from sunburns, can be converted into a material that absorbs sunlight and could greatly increase the efficiency of solar energy cells.

Dec 10, 2009
2 / 5 (2) 0

Nanocomposite material provides photonic switching

(PhysOrg.com) -- Integrated photonic devices represent the wave of future technology. These devices will be extremely small, making use of photons on the nanoscale, and (hopefully) be very efficient in terms of power use. ...

Feb 09, 2009 feature
4.2 / 5 (9) 0