Photoinduced conductivity changes in carbon nanotube transistors

Moonsub Shim; Siddons, Giles P.
October 2003
Applied Physics Letters;10/27/2003, Vol. 83 Issue 17, p3564
Academic Journal
Photoinduced conductivity changes in single-walled carbon nanotube transistors have been examined. Low-intensity ultraviolet light significantly reduces the p-channel conductance while simultaneously increasing the n-channel conductance. A combination of optical absorption and electron transport measurements reveals that these changes occur without variations in dopant concentrations. Possible sites of oxygen photodesorption and its implications on the observed electronic properties of nanotubes are considered. © 2003 American Institute of Physics.


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