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Comment on: “Photocurrent Amplification at Carbon Nanotube‐Metal Contacts”
Author(s) -
Omari M.,
Kouklin N. A.
Publication year - 2011
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201101704
Subject(s) - photocurrent , materials science , carbon nanotube , schottky diode , optoelectronics , conductance , nanotechnology , nanotube , metal , electrode , condensed matter physics , diode , physics , chemistry , metallurgy
Lien et al. (Adv. Mater. 2006, vol. 18, p. 98) reported on photocurrent generation in SWNT thin films suspended across metal electrodes at zero bias and the effect was attributed to the Schottky contacts formed at the nanotube‐metal interfaces. By performing a set of independent experiments and tests on similarly engineered two‐terminal devices and analyzing the results reported in said paper we show that the response is not associated with the contacts or temperature‐induced conductance change (bolometric effect), but is instead caused by an optically induced thermovoltaic effect.