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Sains Malaysiana 46(7)(2017): 1103–1109
http://dx.doi.org/10.17576/jsm-2017-4607-13
Characterization of Transparent Conducting
Carbon Nanotube Thin Films Prepared via Different Methods
(Pencirian Filem Nipis Pengalir Lutsinar
Tiub Nano Karbon Disediakan Melalui Pelbagai Kaedah)
ISKANDAR YAHYA*, LEE LI THENG, SERI MASTURA MUSTAZA, HUDA ABDULLAH
& NOWSHAD AMIN
Department
of Electrical, Electronic and Systems Engineering, Faculty of Engineering
and Built Environment, Universiti Kebangsaan Malaysia, 43600 UKM Bangi,
Selangor Darul Ehsan, Malaysia
Received:
26 December 2016/Accepted: 6 March 2017
ABSTRACT
The fabrication and
characterization of transparent conductors based on single walled carbon
nanotube (SWCNT) thin films were carried out in controlled
environment and its performance compared. Here, we demonstrate the fabrication
of thin, transparent, optically homogeneous,
electrically conducting films of metallic enriched single-walled carbon
nanotubes via three different deposition techniques namely dip coating, vacuum
filtration and Langmuir Blodgett. Optical characterization showed that the
maximum transmittance, TM, in Vis region is ~ 96.3% and
minimum surface roughness, Ra ~ 4.87 nm achieved via
Langmuir-Blodgett technique. I-V characteristics shows minimum sheet resistance, Rs ~ 3.62 × 103 Ω/sq and maximum conductivity, σ ~ 27.65 Ω-1cm-1 for
vacuum filtration technique. It is shown that SWCNT deposition
technique significantly affects the optical and electrical characteristics of
resulting thin films. Langmuir Blodgett method produced film with the lowest
surface roughness of Ra ~ 4.87 nm and uniform conductivity
of σ ~ 0.025 Ω-1cm-1,
whereas vacuum filtration method produced film with the highest surface
roughness of Ra ~ 12.83 nm and non-uniform conductivity, σ,
ranging from ~ 0.199 to ~0.017 Ω-1cm-1 depending
on the film dimensions.
Keywords: Single walled
carbon nanotubes; thin films; transparent conductor
ABSTRAK
Fabrikasi dan pencirian
pengalir lutsinar berdasarkan filem nipis tiub nano karbon dinding
tunggal (SWCNT) telah
dijalankan dalam
persekitaran terkawal dan perbandingan prestasinya dibuat. Di sini, kita
menunjukkan fabrikasi filem nipis, telus,
homogen dan
bersifat konduksi elektrik daripada karbon tiub nano
dinding tunggal
yang diperkaya secara metalik melalui tiga teknik pemendapan
yang berbeza iaitu
celup salutan, penapisan vakum dan Langmuir-Blodgett. Pencirian
optik menunjukkan
bahawa pemindahan maksimum, TM, bagi
gelombang Vis adalah
~ 96.3% dan kekasaran
permukaan minimum, Ra adalah
~ 4.87 nm dicapai melalui
teknik Langmuir-Blodgett. Pencirian
I-V menunjukkan rintangan
helaian, Rs ~ 3.62 × 103
Ω/sq dan kekonduksian
maksima, σ ~ 27.65 Ω-1cm-1
melalui teknik penapisan vakum. Ditunjukkan
bahawa teknik pemendapan
SWCNT
memberi kesan
yang signifikan terhadap
ciri optikal dan
elektrik filem
nipis yang dihasilkan.
Teknik Langmuir Blodgett menghasilkan
filem nipis
dengan kekasaran permukaan terendah iaitu Ra ~ 4.87 nm dan
kekonduksian yang sekata
pada nilai σ ~ 0.025 Ω-1cm-1,
manakala teknik
penapisan vakum menghasilkan filem nipis dengan kekasaran
permukaan tertinggi
iaitu Ra ~ 12.83 nm dan
kekonduksian, σ, yang
tidak sekata
pada julat ~ 0.199 to ~0.017 Ω-1cm-1,
bergantung kepada
dimensi filem.
Kata kunci: Filem
nipis; karbon tiub
nano dinding tunggal; konduktor telus REFERENCES
Ago, H., Ohshima, S., Uchida, K. & Yumura,
M. 2001. Gas-phase synthesis of single-wall carbon
nanotubes from colloidal solution of metal nanoparticles. The Journal
of Physical Chemistry B 105(43): 10453-10456. doi:10.1021/jp012084j.
Ding,
L., Yuan, D. & Liu, J. 2008. Growth of high-density
parallel arrays of long single-walled carbon nanotubes on quartz substrates. Journal of the American Chemical Society 130(16): 5428-5429. doi:10.1021/ja8006947.
Jorio,
A., Dresselhaus, G. & Dresselhaus,
M.S. 2008. Carbon Nanotubes. Berlin:
Springer.
Kim, Y., Minami, N., Zhu, W., Kazaoui,
S., Azumi, R. & Matsumoto, M. 2003. Langmuir-blodgett films of single-wall carbon
nanotubes: Layer-by-layer deposition and in-plane orientation of tubes. Japanese
Journal of Applied Physics 42: 7629-7634. doi:10.1143/jjap.42.7629.
Ko, Y., Kim, N.H., Lee, N.R. & Cheng,
S.T. 2014. Meniscus-dragging deposition of single-walled carbon nanotubes for
highly uniform, large-area, transparent conductors. Carbon 77: 964-972.
doi:10.1016/j.carbon.2014.06.012.
Li, J., Liu, K., Liang, S., Zhou, W., Pierce, M., Wang, F., Peng,
L. & Liu, J. 2014. Growth of high-density-aligned and
semiconducting-enriched single-walled carbon nanotubes: Decoupling the conflict
between density and selectivity. ACS Nano 8(1): 554-562. doi:10.1021/nn405105y.
Mizuhashi, M. 1980. Electrical properties of
vacuum-deposited indium oxide and indium tin oxide films. Thin Solid Films 70(1):
91-100. doi:10.1016/0040-6090(80)90415-0.
Wu,
Z. 2004. Transparent, conductive carbon nanotube films. Science 305(5688): 1273-1276. American Association for
the Advancement of Science (AAAS). doi:10.1126/
science.1101243.
Yahya,
I., Bonaccorso, F., Clowes, S.K., Ferrari, A.C. &
Silva, S.R.P. 2015. Temperature dependent
separation of metallic and semiconducting carbon nanotubes using gel agarose
chromatography. Carbon 93: 574-594. doi:10.1016/j.
carbon.2015.05.036.
Zhao, M-Q., Tian, G.L., Zhang, Q., Huang, J.Q., Nie, J.Q. & Wei, F. 2012. Preferential growth of short aligned, metallic-rich single-walled carbon
nanotubes from perpendicular layered double hydroxide film. Nanoscale 4(7):
2470. doi:10.1039/ c2nr00043a.
*Corresponding author; email: Iskandar.yahya@ukm.edu.my
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