Over the past decades, engineers have introduced numerous technologies that rely on light and its underlying characteristics.

Photovoltaics, the conversion of light to electricity, is a key technology for sustainable energy. Since the days of Max Planck and Albert Einstein, we know that light as well as electricity are ...

Dirac electrons were predicted by P. Dirac and discovered by A. Geim, both of whom were awarded the Nobel Prize in Physics in 1933 and in 2010, respectively. Dirac electrons behave like photons rather ...

Quantum emitters work by releasing single photons, individual packets of light, on demand. This ability is critical because ...

Researchers have successfully created electron-photon pairs in a controlled way in an electron microscope. Researchers from Göttingen (Germany) and Lausanne (Switzerland) have successfully created ...

Researchers from MIT have published a proof-of-concept paper that proves an organic dye called “pentacene,” when applied to a photovoltaic cell, can generate two electrons from a single photon.

Within our comfortable world of causality we expect that reactions always follow an action and not vice versa. This why the recent chatter in the media about researchers having discovered ‘negative ...

Illustration of exciton splitting in the organic semiconductor pentacene, which consists of five benzene rings each. Instead of the usual two free charge carriers, absorption of a photon in pentacene ...

”When pentacene is excited by light, the electrons in the material rapidly react,” explains Prof. Ralph Ernstorfer, a senior author of the study. “It was an open and very disputed question whether a ...