Cadmium Sulfide Thin Films Deposited onto MWCNT/Polysulfone Substrates by Chemical Bath Deposition
| Autor: | A.I. Oliva, M. Moreno, G. M. Alonzo-Medina, A.I. Oliva-Avilés |
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| Rok vydání: | 2016 |
| Předmět: |
010302 applied physics
Materials science Article Subject Band gap General Engineering 02 engineering and technology Substrate (electronics) Carbon nanotube Conductivity 021001 nanoscience & nanotechnology 01 natural sciences Cadmium sulfide law.invention chemistry.chemical_compound chemistry Chemical engineering law 0103 physical sciences lcsh:TA401-492 lcsh:Materials of engineering and construction. Mechanics of materials General Materials Science Polysulfone Thin film 0210 nano-technology Chemical bath deposition |
| Zdroj: | Advances in Materials Science and Engineering, Vol 2016 (2016) |
| ISSN: | 1687-8442 1687-8434 |
| DOI: | 10.1155/2016/2890717 |
| Popis: | Cadmium sulfide (CdS) thin films were deposited by chemical bath deposition (CBD) onto polymeric composites with electric field-aligned multiwall carbon nanotubes (MWCNTs). MWCNT/polysulfone composites were prepared by dispersing low concentrations of MWCNTs within dissolved polysulfone (PSF). An alternating current electric field was “in situ” applied to align the MWCNTs within the dissolved polymer along the field direction until the solvent was evaporated. 80 μm thick solid MWCNT/PSF composites with an electrical conductivity 13 orders of magnitude higher than the conductivity of the neat PSF were obtained. The MWCNT/PSF composites were subsequently used as flexible substrates for the deposition of CdS thin films by CBD. Transparent and adherent CdS thin films with an average thickness of 475 nm were obtained. The values of the energy band gap, average grain size, rms roughness, crystalline structure, and preferential orientation of the CdS films deposited onto the polymeric substrate were very similar to the corresponding values of the CdS deposited onto glass (conventional substrate). These results show that the MWCNT/PSF composites with electric field-tailored MWCNTs represent a suitable option to be used as flexible conducting substrate for CdS thin films, which represents an important step towards the developing of flexible systems for photovoltaic applications. |
| Databáze: | OpenAIRE |
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