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Competing Photocurrent Mechanisms in Quasi‐Metallic Carbon Nanotube pn Devices
Author(s) -
Amer Moh. R.,
Chang ShunWen,
Cronin Stephen B.
Publication year - 2015
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201403413
Subject(s) - photocurrent , photodetector , carbon nanotube , materials science , nanotube , band gap , optoelectronics , nanotechnology , photoconductivity , photovoltaic system , engineering physics , physics , electrical engineering , engineering
Photodetectors based on quasi‐metallic carbon nanotubes exhibit unique optoelectronic properties. Due to their small bandgap, photocurrent generation is possible at room temperature. The origin of this photocurrent is investigated to determine the underlying mechanism, which can be photothermoelectric effect or photovoltaic effect, depending on the bandgap magnitude of the quasi‐metallic nanotube.