Time-Resolved Picosecond Photocurrents in Contacted Carbon Nanotubes

Prechtel, Leonhard ; Song, Li

; Manus, Stephan ; Schuh, Dieter ; Wegscheider, Werner ; Holleitner, Alexander W.

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Zusammenfassung

We introduce coplanar stripline circuits to resolve the ultrafast photocurrent dynamics of freely suspended carbon nanotubes (CNTs) in the time domain. By applying an on-chip pump-probe laser spectroscopy, we demonstrate that CNTs, contacted by metal electrodes, exhibit a picosecond photocurrent response. We find a combination of an optically induced ultrafast displacement current, transport of ...