Synthesis of TiO2/Pd/Multi-Walled Carbon Nano-Structures by Hydrothermal Technique and deposited it on n-Si substrate as TiO2/Pd/MWCNTs:n-Si Heterojunction by Pulsed Laser Deposition
Carbon nanostructures (CNTs) have been prepared by a Hydrothermal deposition technique based on the polymer Polyethylene glycol (PEG) dissolved in water and Ethanol alcohol of a new carbon sources materials mixed with (PdCl2) as a catalyst mixed with Sodium hydroxide (8gm NaOH) using Parr reactor at...
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| Format: | Article |
| Language: | English |
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Unviversity of Technology- Iraq
2015-06-01
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| Series: | Engineering and Technology Journal |
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| Online Access: | https://etj.uotechnology.edu.iq/article_108902_c67ad9f6889c7fc004dd73f384b25fb6.pdf |
| _version_ | 1797325820532883456 |
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| author | Saif Alshrefi Dunia Mahdi Zainab Sadik |
| author_facet | Saif Alshrefi Dunia Mahdi Zainab Sadik |
| author_sort | Saif Alshrefi |
| collection | DOAJ |
| description | Carbon nanostructures (CNTs) have been prepared by a Hydrothermal deposition technique based on the polymer Polyethylene glycol (PEG) dissolved in water and Ethanol alcohol of a new carbon sources materials mixed with (PdCl2) as a catalyst mixed with Sodium hydroxide (8gm NaOH) using Parr reactor at temperature (190°C) and forming the hybrid composite material (TiO2/Pd/MWCNTs) by the same way. Thence, deposited heterojunction material (TiO2/Pd/MWCNTs:n-Si) using the Pulsed Laser Deposition Technique (PLD), on the substrate of n-silicon wafer. The obtained (MWCNTs & TiO2/Pd/MWCNTs) are investigated by scanning electron microscope (SEM), X-ray diffraction (XRD) and X-ray Photo-electron Spectroscopy (XPS). Normal MWCNTs are formed multi-walled carbon nanotubes (MWCNTs) and carbon nanosheets (CNSs) but in little bit amount. MWCNTs were obtained as main products with lengths of (1.6–3 μm) and diameters of (30-60 nm) could be synthesized at as low temperature as (190°C). Deconvolution of the (C1s ) peaks which characteristic of C-C bonds, showed a main peak at (284.96 and 285.04 eV) with total amount (74.96 and 30.64 at%) for the product of MWCNTs and TiO2/Pd/MWCNTs composite respectively. Current – voltage characteristics of heterojunction showed that forward bias current change exponentially approximately with applied voltage at dark and this agreement with tunneling–recombination model. Also (I-V) characteristics under illumination of TiO2/Pd/MWCNTs heterojunction deposited on p-Si substrate (η=10.5) efficiency in Solar Cell. |
| first_indexed | 2024-03-08T06:14:50Z |
| format | Article |
| id | doaj.art-bddece729c034b1e8db361c8ad802eaf |
| institution | Directory Open Access Journal |
| issn | 1681-6900 2412-0758 |
| language | English |
| last_indexed | 2024-03-08T06:14:50Z |
| publishDate | 2015-06-01 |
| publisher | Unviversity of Technology- Iraq |
| record_format | Article |
| series | Engineering and Technology Journal |
| spelling | doaj.art-bddece729c034b1e8db361c8ad802eaf2024-02-04T17:28:23ZengUnviversity of Technology- IraqEngineering and Technology Journal1681-69002412-07582015-06-01335B86788310.30684/etj.33.5B.12108902Synthesis of TiO2/Pd/Multi-Walled Carbon Nano-Structures by Hydrothermal Technique and deposited it on n-Si substrate as TiO2/Pd/MWCNTs:n-Si Heterojunction by Pulsed Laser DepositionSaif Alshrefi0Dunia Mahdi1Zainab Sadik2College of Science for Women , Babylon University/ Babylon. Email: Saif_master80@yahoo.comCollege of Science ,Baghdad University/ Baghdad.College of Science ,Baghdad University/Baghdad.Carbon nanostructures (CNTs) have been prepared by a Hydrothermal deposition technique based on the polymer Polyethylene glycol (PEG) dissolved in water and Ethanol alcohol of a new carbon sources materials mixed with (PdCl2) as a catalyst mixed with Sodium hydroxide (8gm NaOH) using Parr reactor at temperature (190°C) and forming the hybrid composite material (TiO2/Pd/MWCNTs) by the same way. Thence, deposited heterojunction material (TiO2/Pd/MWCNTs:n-Si) using the Pulsed Laser Deposition Technique (PLD), on the substrate of n-silicon wafer. The obtained (MWCNTs & TiO2/Pd/MWCNTs) are investigated by scanning electron microscope (SEM), X-ray diffraction (XRD) and X-ray Photo-electron Spectroscopy (XPS). Normal MWCNTs are formed multi-walled carbon nanotubes (MWCNTs) and carbon nanosheets (CNSs) but in little bit amount. MWCNTs were obtained as main products with lengths of (1.6–3 μm) and diameters of (30-60 nm) could be synthesized at as low temperature as (190°C). Deconvolution of the (C1s ) peaks which characteristic of C-C bonds, showed a main peak at (284.96 and 285.04 eV) with total amount (74.96 and 30.64 at%) for the product of MWCNTs and TiO2/Pd/MWCNTs composite respectively. Current – voltage characteristics of heterojunction showed that forward bias current change exponentially approximately with applied voltage at dark and this agreement with tunneling–recombination model. Also (I-V) characteristics under illumination of TiO2/Pd/MWCNTs heterojunction deposited on p-Si substrate (η=10.5) efficiency in Solar Cell.https://etj.uotechnology.edu.iq/article_108902_c67ad9f6889c7fc004dd73f384b25fb6.pdfcarbon nanotubeshybrid materialshydrothermal techniquepulsed laser deposition |
| spellingShingle | Saif Alshrefi Dunia Mahdi Zainab Sadik Synthesis of TiO2/Pd/Multi-Walled Carbon Nano-Structures by Hydrothermal Technique and deposited it on n-Si substrate as TiO2/Pd/MWCNTs:n-Si Heterojunction by Pulsed Laser Deposition Engineering and Technology Journal carbon nanotubes hybrid materials hydrothermal technique pulsed laser deposition |
| title | Synthesis of TiO2/Pd/Multi-Walled Carbon Nano-Structures by Hydrothermal Technique and deposited it on n-Si substrate as TiO2/Pd/MWCNTs:n-Si Heterojunction by Pulsed Laser Deposition |
| title_full | Synthesis of TiO2/Pd/Multi-Walled Carbon Nano-Structures by Hydrothermal Technique and deposited it on n-Si substrate as TiO2/Pd/MWCNTs:n-Si Heterojunction by Pulsed Laser Deposition |
| title_fullStr | Synthesis of TiO2/Pd/Multi-Walled Carbon Nano-Structures by Hydrothermal Technique and deposited it on n-Si substrate as TiO2/Pd/MWCNTs:n-Si Heterojunction by Pulsed Laser Deposition |
| title_full_unstemmed | Synthesis of TiO2/Pd/Multi-Walled Carbon Nano-Structures by Hydrothermal Technique and deposited it on n-Si substrate as TiO2/Pd/MWCNTs:n-Si Heterojunction by Pulsed Laser Deposition |
| title_short | Synthesis of TiO2/Pd/Multi-Walled Carbon Nano-Structures by Hydrothermal Technique and deposited it on n-Si substrate as TiO2/Pd/MWCNTs:n-Si Heterojunction by Pulsed Laser Deposition |
| title_sort | synthesis of tio2 pd multi walled carbon nano structures by hydrothermal technique and deposited it on n si substrate as tio2 pd mwcnts n si heterojunction by pulsed laser deposition |
| topic | carbon nanotubes hybrid materials hydrothermal technique pulsed laser deposition |
| url | https://etj.uotechnology.edu.iq/article_108902_c67ad9f6889c7fc004dd73f384b25fb6.pdf |
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