DocumentCode
2786098
Title
Resolving Excitonic and Free Carriers Transitions in Single Wall Carbon Nanotubes Using Field Enhanced Photocurrent Spectroscopy
Author
Mohite, A.D. ; Nagabhirava, B. ; Bansal, T. ; Shah, H. ; Gopinath, P. ; Sumanasekera, G.U. ; Alphenaar, B.W.
Author_Institution
Department of Electrical Engineering, University of Louisville, KY, 40292
Volume
2
fYear
2006
fDate
17-20 June 2006
Firstpage
712
Lastpage
715
Abstract
Excitonic and free carrier transitions in single wall carbon nanotubes are distinguished using field enhanced photocurrent spectroscopy. Electric field ionization allows for the detection of bound exciton states that otherwise would not contribute to the photocurrent. Excitonic states associated with the ground state semiconductor are resolved. The results are modeled using the Fowler-Nordheim tunneling.
Keywords
Displcament photocurrent technique Fowler-Nordheim tunneling; Excitonic; Free-Carrier; Carbon nanotubes; Current measurement; Energy measurement; Excitons; Optical films; Optical pumping; Optical sensors; Photoconductivity; Pulse amplifiers; Spectroscopy; Displcament photocurrent technique Fowler-Nordheim tunneling; Excitonic; Free-Carrier;
fLanguage
English
Publisher
ieee
Conference_Titel
Nanotechnology, 2006. IEEE-NANO 2006. Sixth IEEE Conference on
Print_ISBN
1-4244-0077-5
Type
conf
DOI
10.1109/NANO.2006.247754
Filename
1717204
Link To Document