Electrical and photoresponse properties of Co3O4 nanowires
Electrical and photocurrent characteristics of single Co3O4 nanowire devices were studied systematically. Current-voltage characteristics’ measurements and impedance spectroscopy of single Co3O4 nanowire devices were performed and analysed using possible mechanism. Photoresponses of individual nanow...
| Main Authors: | , , , , , , |
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| Format: | Journal Article |
| Language: | English |
| Published: |
2013
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| Online Access: | https://hdl.handle.net/10356/94830 http://hdl.handle.net/10220/9350 |
| _version_ | 1824453621157199872 |
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| author | Mukherjee, Bablu Varghese, Binni Karthik, K. R. G. Jinesh, K. B. Mhaisalkar, Subodh Gautam Tok, Eng Soon Sow, Chorng Haur |
| author2 | School of Materials Science & Engineering |
| author_facet | School of Materials Science & Engineering Mukherjee, Bablu Varghese, Binni Karthik, K. R. G. Jinesh, K. B. Mhaisalkar, Subodh Gautam Tok, Eng Soon Sow, Chorng Haur |
| author_sort | Mukherjee, Bablu |
| collection | NTU |
| description | Electrical and photocurrent characteristics of single Co3O4 nanowire devices were studied systematically. Current-voltage characteristics’ measurements and impedance spectroscopy of single Co3O4 nanowire devices were performed and analysed using possible mechanism. Photoresponses of individual nanowires were obtained by global irradiation of laser beams with photon energies above band gap and at sub-band gap of the nanowires. The magnitude of photocurrent and its response time revealed that defect level excitations significantly contribute to the photoresponse of Co3O4 nanowires. In addition, the electrically Ohmic nature of the nanowire/Pt contact and p-type conductivity of Co3O4 nanowire is extracted from the current-voltage characteristics and spatially resolved photocurrent measurements. |
| first_indexed | 2025-02-19T03:09:19Z |
| format | Journal Article |
| id | ntu-10356/94830 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2025-02-19T03:09:19Z |
| publishDate | 2013 |
| record_format | dspace |
| spelling | ntu-10356/948302021-01-08T06:28:05Z Electrical and photoresponse properties of Co3O4 nanowires Mukherjee, Bablu Varghese, Binni Karthik, K. R. G. Jinesh, K. B. Mhaisalkar, Subodh Gautam Tok, Eng Soon Sow, Chorng Haur School of Materials Science & Engineering Energy Research Institute @ NTU (ERI@N) Electrical and photocurrent characteristics of single Co3O4 nanowire devices were studied systematically. Current-voltage characteristics’ measurements and impedance spectroscopy of single Co3O4 nanowire devices were performed and analysed using possible mechanism. Photoresponses of individual nanowires were obtained by global irradiation of laser beams with photon energies above band gap and at sub-band gap of the nanowires. The magnitude of photocurrent and its response time revealed that defect level excitations significantly contribute to the photoresponse of Co3O4 nanowires. In addition, the electrically Ohmic nature of the nanowire/Pt contact and p-type conductivity of Co3O4 nanowire is extracted from the current-voltage characteristics and spatially resolved photocurrent measurements. Published version 2013-03-07T07:07:22Z 2019-12-06T19:03:03Z 2013-03-07T07:07:22Z 2019-12-06T19:03:03Z 2012 2012 Journal Article Varghese, B., Mukherjee, B., Karthik, K. R. G., Jinesh, K. B., Mhaisalkar, S. G., Tok, E. S., et al. (2012). Electrical and photoresponse properties of Co3O4 nanowires. Journal of Applied Physics, 111(10). 0021-8979 https://hdl.handle.net/10356/94830 http://hdl.handle.net/10220/9350 10.1063/1.4712497 en Journal of applied physics © 2012 American Institute of Physics. This paper was published in Journal of Applied Physics and is made available as an electronic reprint (preprint) with permission of American Institute of Physics. The paper can be found at the following official DOI: [http://dx.doi.org/10.1063/1.4712497]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law. application/pdf |
| spellingShingle | Mukherjee, Bablu Varghese, Binni Karthik, K. R. G. Jinesh, K. B. Mhaisalkar, Subodh Gautam Tok, Eng Soon Sow, Chorng Haur Electrical and photoresponse properties of Co3O4 nanowires |
| title | Electrical and photoresponse properties of Co3O4 nanowires |
| title_full | Electrical and photoresponse properties of Co3O4 nanowires |
| title_fullStr | Electrical and photoresponse properties of Co3O4 nanowires |
| title_full_unstemmed | Electrical and photoresponse properties of Co3O4 nanowires |
| title_short | Electrical and photoresponse properties of Co3O4 nanowires |
| title_sort | electrical and photoresponse properties of co3o4 nanowires |
| url | https://hdl.handle.net/10356/94830 http://hdl.handle.net/10220/9350 |
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