Bolometric infrared photoresponse of suspended single-walled carbon nanotube films

Science
Mikhail E ItkisRobert C Haddon

Abstract

The photoresponse in the electrical conductivity of a single-walled carbon nanotube (SWNT) film is dramatically enhanced when the nanotube film is suspended in vacuum. We show here that the change in conductivity is bolometric (caused by heating of the SWNT network). Electron-phonon interactions lead to ultrafast relaxation of the photoexcited carriers, and the energy of the incident infrared (IR) radiation is efficiently transferred to the crystal lattice. It is not the presence of photoexcited holes and electrons, but a rise in temperature, that results in a change in resistance; thus, photoconductivity experiments cannot be used to support the band picture over the exciton model of excited states in carbon nanotubes. The photoresponse of suspended SWNT films is sufficiently high that they may function as the sensitive element of an IR bolometric detector.

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Citations

Oct 30, 2013·ACS Applied Materials & Interfaces·Rongtao LuJudy Z Wu
Sep 30, 2010·Journal of the American Chemical Society·Palanisamy RameshRobert C Haddon
Nov 25, 2011·Nano Letters·Gennady M MikheevEsko I Kauppinen
Apr 7, 2011·ACS Nano·Longyan YuanZhong Lin Wang
Aug 21, 2013·ACS Nano·Atikur Rahman, Milan K Sanyal
Mar 15, 2011·Physical Chemistry Chemical Physics : PCCP·Yu-Hsien LinWen-Kuang Hsu
Apr 13, 2013·The Analyst·Yi-Hsuan TsengLong Que
Apr 3, 2009·Proceedings of the National Academy of Sciences of the United States of America·Kohei MizunoKenji Hata
Nov 5, 2013·The Review of Scientific Instruments·Qin-Yi LiKoji Takahashi
Dec 9, 2009·The Journal of Chemical Physics·Yurong YangJ X Cao
Jul 14, 2011·ACS Applied Materials & Interfaces·Gustavo Vera-RevelesFrancisco J González
Jan 5, 2013·Nanoscale·He MaWei Peng
Oct 13, 2015·Physical Chemistry Chemical Physics : PCCP·Qiong HeTianhong Ao
Oct 30, 2010·Biosensors & Bioelectronics·Shruti Nambiar, John T W Yeow
Mar 12, 2008·Angewandte Chemie·Xuan WangKlaus Müllen
Aug 23, 2012·Advanced Materials·Sébastien NanotJunichiro Kono
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Dec 25, 2010·Advanced Materials·Tamara DruzhininaUlrich S Schubert
Sep 16, 2015·ACS Applied Materials & Interfaces·Yunming WangShaoqin Gong
Aug 6, 2015·Accounts of Chemical Research·Mikhail E ItkisRobert C Haddon
Nov 6, 2012·Chemical Society Reviews·Deep JariwalaMark C Hersam
Jul 6, 2016·ACS Nano·Shuang LiangLian-Mao Peng
Oct 6, 2016·ACS Applied Materials & Interfaces·Stanislav EvlashinNikolay Suetin

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