Polarization dependent optical absorption properties of single-walled carbon nanotubes and methodology for the evaluation of their morphology

被引:78
作者
Murakami, Y [1 ]
Einarsson, E [1 ]
Edamura, T [1 ]
Maruyama, S [1 ]
机构
[1] Univ Tokyo, Dept Mech Engn, Bunkyo Ku, Tokyo 1138656, Japan
基金
日本学术振兴会;
关键词
carbon nanotubes; chemical vapor deposition; optical properties;
D O I
10.1016/j.carbon.2005.05.036
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
Polarization dependence of-the optical absorption properties of SWNTs is presented and investigated in detail for the energy range 0.5-6 eV. We found that the absorption peaks in the UV region at approximately 4.5 and 5.25 eV exhibit remarkable and different dependencies on the morphology of the SWNT film, or equivalently, on the incident light polarization relative to the SWNT axis. An analytical pathway to evaluate the physical degree of SWNT alignment for a vertically aligned SWNT film is developed with both transition dipoles parallel and perpendicular to the SWNT axis taken into account. This analytical procedure, coupled with polarized optical absorption measurements performed on the vertically aligned SWNT film grown on substrates, leads to the determination of the bare optical absorption cross-section of SWNTs for both parallel and perpendicular to SWNT axis. In the end, the proposed methodology for evaluating the SWNT film morphology is applied to investigate the transient change of the degree of alignment in the growth process of our vertically aligned SWNT films. (C) 2005 Elsevier Ltd. All rights reserved.
引用
收藏
页码:2664 / 2676
页数:13
相关论文
共 40 条
[1]   AHARONOV-BOHM EFFECT IN CARBON NANOTUBES [J].
AJIKI, H ;
ANDO, T .
PHYSICA B, 1994, 201 :349-352
[2]  
BORGHESHI A, 1991, HDB OPTICAL CONSTANT, V2
[3]   Ultrafast optical switching properties of single-wall carbon nanotube polymer composites at 1.55 μm [J].
Chen, YC ;
Raravikar, NR ;
Schadler, LS ;
Ajayan, PM ;
Zhao, YP ;
Lu, TM ;
Wang, GC ;
Zhang, XC .
APPLIED PHYSICS LETTERS, 2002, 81 (06) :975-977
[4]   Optical properties of graphite [J].
Djurisic, AB ;
Li, EH .
JOURNAL OF APPLIED PHYSICS, 1999, 85 (10) :7404-7410
[5]   Photoconductivity of single carbon nanotubes [J].
Freitag, M ;
Martin, Y ;
Misewich, JA ;
Martel, R ;
Avouris, PH .
NANO LETTERS, 2003, 3 (08) :1067-1071
[6]   Optical absorption and energy-loss spectra of aligned carbon nanotubes [J].
García-Vidal, FJ ;
Pitarke, JM .
EUROPEAN PHYSICAL JOURNAL B, 2001, 22 (02) :257-265
[7]   Fibers of aligned single-walled carbon nanotubes: Polarized Raman spectroscopy [J].
Gommans, HH ;
Alldredge, JW ;
Tashiro, H ;
Park, J ;
Magnuson, J ;
Rinzler, AG .
JOURNAL OF APPLIED PHYSICS, 2000, 88 (05) :2509-2514
[8]   Resonant Raman spectra of carbon nanotube bundles observed by perpendicularly polarized light [J].
Grüneis, A ;
Saito, R ;
Jiang, J ;
Samsonidze, GG ;
Pimenta, MA ;
Jorio, A ;
Souza, AG ;
Dresselhaus, G ;
Dresselhaus, MS .
CHEMICAL PHYSICS LETTERS, 2004, 387 (4-6) :301-306
[9]   Inhomogeneous optical absorption around the K point in graphite and carbon nanotubes -: art. no. 165402 [J].
Grüneis, A ;
Saito, R ;
Samsonidze, GG ;
Kimura, T ;
Pimenta, MA ;
Jorio, A ;
Souza, AG ;
Dresselhaus, G ;
Dresselhaus, MS .
PHYSICAL REVIEW B, 2003, 67 (16)
[10]   Purification and separation of carbon nanotubes [J].
Haddon, RC ;
Sippel, J ;
Rinzler, AG ;
Papadimitrakopoulos, F .
MRS BULLETIN, 2004, 29 (04) :252-259