Abstract
We present a comparative study between multiwalled carbon nanotubes (MWCNTs) thin films deposited on polyethylene terephthalate (PET) substrates using (i) spin-coating technique and (ii) deposition through a membrane. We deduce from transparence, electrical properties, and AFM image that deposition through membrane presents better properties than spin-coating method. The concentration comparison shows that the optimum result was achieved at a concentration of 1.2 mg·mL−1corresponding to a resistance (Rs) of 180 Ω·cm−2and an optical transparence of about 81% using a wavelength 550 nm. We will also demonstrate the use of the elaborated electrodes to fabricate the following flexible structure: PET-MWCNTs/MEH-PPV/Al. The series resistanceRsand the ideality factornwere calculated.
Highlights
Transparent conductive films are extremely common and critically important in optoelectronic devices
CNTs exist in two types: the single-walled carbon nanotubes (SWCNTs) and the multiwalled carbon nanotubes (MWCNTs)
MWCNTs were dispersed in deionized water containing 1 wt% sodium dodecyl sulfate (SDS)
Summary
Transparent conductive films are extremely common and critically important in optoelectronic devices. New transparent electrode materials have rapidly emerged in recent years, including carbon nanotubes (CNTs), graphene, and metal nanowires. This material presents good conductivity coupled with aspect ratio which yields films with high transparence, adequate sheet resistance, and high mechanical flexibility [6, 7]. The intrinsically good conductivity coupled with aspect ratio yields films with high transparence, adequate sheet resistance, and high mechanical flexibility. These material properties, combined with the low costs, deposition, and the inexpensive material, make these emerging nanomaterials very attractive. We will demonstrate their use as transparent electrodes for the following structure: PETMWCNTs/MEH-PPV/Al
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