Spatially Resolved Transport Properties of Pristine and Doped Single-Walled Carbon Nanotube Networks

被引：89

作者：

Znidarsic, Andrej ^{[1
]}

Kaskela, Antti ^{[2
]}

Laiho, Patrik ^{[2
]}

Gaberscek, Miran ^{[1
]}

Ohno, Yutaka ^{[3
]}

Nasibulin, Albert G. ^{[2
]}

Kauppinen, Esko I. ^{[2
]}

Hassanien, Abdou ^{[1
]}

机构：

[1] Natl Inst Chem, Electrochem Mat Dept, Ljubljana 1000, Slovenia

[2] Aalto Univ, Dept Appl Phys, Nanomat Grp, Aalto 00076, Finland

[3] Nagoya Univ, Dept Quantum Engn, Nagoya, Aichi 4648603, Japan

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2013年 / 117卷 / 25期

关键词：

FILMS; TRANSPARENT; CONDUCTIVITY; PERFORMANCE; BUNDLES; SENSORS;

D O I：

10.1021/jp403983y

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We use noninvasive atomic force microscopy to probe the spatial electrical conductivity of isolated junctions of pristine and nitric acid treated single-walled carbon nanotube networks (SWCNT-N). By analyzing the local IV curves of SWCNTs and bundles with various diameters, the resistance per unit length and the contact resistance of their junctions are estimated to be 316 k Omega/mu m and 29532 k Omega, respectively. We find that the contact resistance decreases with increasing SWCNT or bundle diameter and depends on the contact morphology, reaching a value of 29 k Omega at a diameter of 10 nm. A nitric acid treatment moderately dopes SWCNTs and reduces their average contact resistance by a factor of 3 while the resistance of the nanotubes remains largely unaltered. Remarkably, the same treatment on an SWCNT-N shows similar reduction in the sheet resistance by a factor of 4. These results suggest that the resistance reduction mechanism is related to the contact modulation with no major impact on conductance of SWCNTs.

引用

页码：13324 / 13330

页数：7

共 50 条

[1] Nonlocal spin transport in single-walled carbon nanotube networks
Yang, Hyunsoo
Itkis, Mikhail E.
Moriya, Rai
Rettner, Charles
Jeong, Jae-Seung
Pickard, Daniel S.
Haddon, Robert C.
Parkin, Stuart S. P.
PHYSICAL REVIEW B, 2012, 85 (05):
[2] Electrical Connectivity in Single-Walled Carbon Nanotube Networks
Nirmalraj, Peter N.
Lyons, Philip E.
De, Sukanta
Coleman, Jonathan N.
Boland, John J.
NANO LETTERS, 2009, 9 (11) : 3890 - 3895
[3] Controlling the doping of single-walled carbon nanotube networks by proton irradiation
Walker, D.
Mann, C. J.
Panetta, C. J.
Alaan, D. R.
Hopkins, A. R.
Liu, S. H.
APPLIED PHYSICS LETTERS, 2012, 101 (10)
[4] Single-walled carbon nanotube networks in conductive composite materials
Barsan, Oana A.
Hoffmann, Gunter G.
van der Ven, Leo G. J.
de With, G.
FARADAY DISCUSSIONS, 2014, 173 : 365 - 377
[5] Thermal and Electrical Transport in Ultralow Density Single-Walled Carbon Nanotube Networks
Zhang, Ke Jia
Yadav, Abhishek
Kim, Kyu Hun
Oh, Youngseok
Islam, Mohammad F.
Uher, Ctirad
Pipe, Kevin P.
ADVANCED MATERIALS, 2013, 25 (21) : 2926 - 2931
[6] Macroscopic Electrical Properties of Ordered Single-Walled Carbon Nanotube Networks
Vichchulada, Pornnipa
Zhang, Qinghui
Duncan, Alicia
Lay, Marcus D.
ACS APPLIED MATERIALS & INTERFACES, 2010, 2 (02) : 467 - 473
[7] Controlled electronic transport in single-walled carbon nanotube networks: Selecting electron hopping and chemical doping mechanisms
Han, Z. J.
Ostrikov, K.
APPLIED PHYSICS LETTERS, 2010, 96 (23)
[8] Single-walled carbon nanotube networks growth optimization
Ansaldo, Alberto
Jaybhaye, Sandesh
Chiarolini, Marco
Di Zitti, Ermanno
Ricci, Davide
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS, 2009, 246 (11-12): : 2473 - 2476
[9] Improving Quality of Single-Walled Carbon Nanotube Networks
Ansaldo, Alberto
Ricci, Davide
Jaybhaye, Sandesh
Chiarolini, Marco
Di Zitti, Ermanno
2009 9TH IEEE CONFERENCE ON NANOTECHNOLOGY (IEEE-NANO), 2009, : 838 - 841
[10] Improvement of the mechanical properties of single-walled carbon nanotube networks by carbon plasma coatings
Kaskela, Antti
Koskinen, Jari
Jiang, Hua
Tian, Ying
Liu, Xuwen
Susi, Toma
Kaukonen, Markus
Nasibulin, Albert G.
Kauppinen, Esko I.
CARBON, 2013, 53 : 50 - 61

← 1 2 3 4 5 →