Photocurrent Spectroscopy of (<i>n</i>, <i>m</i>) Sorted Solution-Processed Single-Walled Carbon Nanotubes

Variable-wavelength photocurrent microscopy and photocurrent spectroscopy are used to study the photoresponse of (<i>n</i>, <i>m</i>) sorted single-walled carbon nanotube (SWNT) devices. The measurements of (<i>n</i>, <i>m</i>) pure SWCNT devices demonstrate the ability to study the wavelength-dependent photoresponse <i>in situ</i> in a device configuration and deliver photocurrent spectra that reflect the population of the source material. Furthermore, we show that it is possible to map and determine the chirality population within a working optoelectronic SWCNT device