Monday, 17 January, 2011

Extremly fast photodetectors

Speed detection of electrons in nanoscale photodetectors

In solar cells and photodetectors, an optical radiation excites electrons to higher energy states, thereby a photocurrent begins to flow. Scientists led by Professor Alexander Holleitner, physicist at the Technische Universität Muenchen (TUM), have found a way to directly measure the time during which photo-excited electrons flow in nanoscale photodetectors.

Press information NIM (english)
Publication "Time-Resolved Picosecond Photocurrents in Contacted Carbon Nanotubes"