Electrical Properties of MWCNT/HDPE Composite-Based MSM Structure Under Neutron Irradiation
Because of their low cost, low energy consumption, high performance, and exceptional electrical properties, nanocomposites containing carbon nanotubes are suitable for use in many applications such as sensing systems. In this research work, a metal–semiconductor–metal (MSM) structure based on a mult...
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Springer-Verlag
2017
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| author | Kasani, H. Khodabakhsh, R. Taghi Ahmadi, M. Rezaei Ochbelagh, D. Ismail, R. |
| author_facet | Kasani, H. Khodabakhsh, R. Taghi Ahmadi, M. Rezaei Ochbelagh, D. Ismail, R. |
| author_sort | Kasani, H. |
| collection | ePrints |
| description | Because of their low cost, low energy consumption, high performance, and exceptional electrical properties, nanocomposites containing carbon nanotubes are suitable for use in many applications such as sensing systems. In this research work, a metal–semiconductor–metal (MSM) structure based on a multiwall carbon nanotube/high-density polyethylene (MWCNT/HDPE) nanocomposite is introduced as a neutron sensor. Scanning electron microscopy, Fourier-transform infrared, and infrared spectroscopy techniques were used to characterize the morphology and structure of the fabricated device. Current–voltage (I–V) characteristic modeling showed that the device can be assumed to be a reversed-biased Schottky diode, if the voltage is high enough. To estimate the depletion layer length of the Schottky contact, impedance spectroscopy was employed. Therefore, the real and imaginary parts of the impedance of the MSM system were used to obtain electrical parameters such as the carrier mobility and dielectric constant. Experimental observations of the MSM structure under irradiation from an americium–beryllium (Am–Be) neutron source showed that the current level in the device decreased significantly. Subsequently, current pulses appeared in situ I–V and current–time (I–t) curve measurements when increasing voltage was applied to the MSM system. The experimentally determined depletion region length as well as the space-charge-limited current mechanism for carrier transport were compared with the range for protons calculated using Monte Carlo n-particle extended (MCNPX) code, yielding the maximum energy of recoiled protons detectable by the device. |
| first_indexed | 2024-03-05T20:22:29Z |
| format | Article |
| id | utm.eprints-80263 |
| institution | Universiti Teknologi Malaysia - ePrints |
| last_indexed | 2024-03-05T20:22:29Z |
| publishDate | 2017 |
| publisher | Springer-Verlag |
| record_format | dspace |
| spelling | utm.eprints-802632019-04-25T01:24:37Z http://eprints.utm.my/80263/ Electrical Properties of MWCNT/HDPE Composite-Based MSM Structure Under Neutron Irradiation Kasani, H. Khodabakhsh, R. Taghi Ahmadi, M. Rezaei Ochbelagh, D. Ismail, R. QA75 Electronic computers. Computer science Because of their low cost, low energy consumption, high performance, and exceptional electrical properties, nanocomposites containing carbon nanotubes are suitable for use in many applications such as sensing systems. In this research work, a metal–semiconductor–metal (MSM) structure based on a multiwall carbon nanotube/high-density polyethylene (MWCNT/HDPE) nanocomposite is introduced as a neutron sensor. Scanning electron microscopy, Fourier-transform infrared, and infrared spectroscopy techniques were used to characterize the morphology and structure of the fabricated device. Current–voltage (I–V) characteristic modeling showed that the device can be assumed to be a reversed-biased Schottky diode, if the voltage is high enough. To estimate the depletion layer length of the Schottky contact, impedance spectroscopy was employed. Therefore, the real and imaginary parts of the impedance of the MSM system were used to obtain electrical parameters such as the carrier mobility and dielectric constant. Experimental observations of the MSM structure under irradiation from an americium–beryllium (Am–Be) neutron source showed that the current level in the device decreased significantly. Subsequently, current pulses appeared in situ I–V and current–time (I–t) curve measurements when increasing voltage was applied to the MSM system. The experimentally determined depletion region length as well as the space-charge-limited current mechanism for carrier transport were compared with the range for protons calculated using Monte Carlo n-particle extended (MCNPX) code, yielding the maximum energy of recoiled protons detectable by the device. Springer-Verlag 2017-04 Article PeerReviewed Kasani, H. and Khodabakhsh, R. and Taghi Ahmadi, M. and Rezaei Ochbelagh, D. and Ismail, R. (2017) Electrical Properties of MWCNT/HDPE Composite-Based MSM Structure Under Neutron Irradiation. Journal of Electronic Materials, 46 (4). pp. 2548-2555. ISSN 0361-5234 http://dx.doi.org/10.1007%2Fs11664-017-5346-7 DOI:10.1007%2Fs11664-017-5346-7 |
| spellingShingle | QA75 Electronic computers. Computer science Kasani, H. Khodabakhsh, R. Taghi Ahmadi, M. Rezaei Ochbelagh, D. Ismail, R. Electrical Properties of MWCNT/HDPE Composite-Based MSM Structure Under Neutron Irradiation |
| title | Electrical Properties of MWCNT/HDPE Composite-Based MSM Structure Under Neutron Irradiation |
| title_full | Electrical Properties of MWCNT/HDPE Composite-Based MSM Structure Under Neutron Irradiation |
| title_fullStr | Electrical Properties of MWCNT/HDPE Composite-Based MSM Structure Under Neutron Irradiation |
| title_full_unstemmed | Electrical Properties of MWCNT/HDPE Composite-Based MSM Structure Under Neutron Irradiation |
| title_short | Electrical Properties of MWCNT/HDPE Composite-Based MSM Structure Under Neutron Irradiation |
| title_sort | electrical properties of mwcnt hdpe composite based msm structure under neutron irradiation |
| topic | QA75 Electronic computers. Computer science |
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