Fabrication of novel transparent Co3O4-TiO2 nanowires p-n heterojunction diodes for multiband photodetection applications
Axial Co3O4 - TiO2 heterojunction nanowires (NWs) were synthesized by glancing angle deposition (GLAD) technique. The p-n heterojunction showed excellent rectification ratio of 2.26 × 102 at ± 3.4 V. The forward turn on voltage of 1.5 V in the dark was reduced to 1 V under white light excitation on...
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Elsevier
2017
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| Online Access: | https://eprints.nottingham.ac.uk/41947/ |
| _version_ | 1848796387425124352 |
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| author | Choudhuri, Bijit Mondal, Aniruddha Dwivedi, Shyam Murli Manohar Dhar Henini, Mohamed |
| author_facet | Choudhuri, Bijit Mondal, Aniruddha Dwivedi, Shyam Murli Manohar Dhar Henini, Mohamed |
| author_sort | Choudhuri, Bijit |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | Axial Co3O4 - TiO2 heterojunction nanowires (NWs) were synthesized by glancing angle deposition (GLAD) technique. The p-n heterojunction showed excellent rectification ratio of 2.26 × 102 at ± 3.4 V. The forward turn on voltage of 1.5 V in the dark was reduced to 1 V under white light excitation on the device. The diode showed a maximum half-wave rectification efficiency of 7.77% at 200 Hz frequency operated with maximum ±10 V. The device showed maximum peak responsivity of 4.01 A/W and internal gain of 13.1 at 380 nm wavelength. The detectivity was calculated to be 2.82 × 1011 and 1.69 × 1011 Jones and the noise equivalent power was estimated to be 14.9 and 24.8 pW at 380 and 620 nm wavelength, respectively. The device spatial response showed sharp transition with rise and fall time of ∼0.17s and 0.21s, respectively. |
| first_indexed | 2025-11-14T19:47:10Z |
| format | Article |
| id | nottingham-41947 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T19:47:10Z |
| publishDate | 2017 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-419472020-05-04T18:56:37Z https://eprints.nottingham.ac.uk/41947/ Fabrication of novel transparent Co3O4-TiO2 nanowires p-n heterojunction diodes for multiband photodetection applications Choudhuri, Bijit Mondal, Aniruddha Dwivedi, Shyam Murli Manohar Dhar Henini, Mohamed Axial Co3O4 - TiO2 heterojunction nanowires (NWs) were synthesized by glancing angle deposition (GLAD) technique. The p-n heterojunction showed excellent rectification ratio of 2.26 × 102 at ± 3.4 V. The forward turn on voltage of 1.5 V in the dark was reduced to 1 V under white light excitation on the device. The diode showed a maximum half-wave rectification efficiency of 7.77% at 200 Hz frequency operated with maximum ±10 V. The device showed maximum peak responsivity of 4.01 A/W and internal gain of 13.1 at 380 nm wavelength. The detectivity was calculated to be 2.82 × 1011 and 1.69 × 1011 Jones and the noise equivalent power was estimated to be 14.9 and 24.8 pW at 380 and 620 nm wavelength, respectively. The device spatial response showed sharp transition with rise and fall time of ∼0.17s and 0.21s, respectively. Elsevier 2017-07-25 Article PeerReviewed Choudhuri, Bijit, Mondal, Aniruddha, Dwivedi, Shyam Murli Manohar Dhar and Henini, Mohamed (2017) Fabrication of novel transparent Co3O4-TiO2 nanowires p-n heterojunction diodes for multiband photodetection applications. Journal of Alloys and Compounds, 712 . pp. 7-14. ISSN 1873-4669 Semiconductors; Optical materials; Oxide materials; Thin films; Electron-phonon interactions; Photoconductivity and photovoltaics http://www.sciencedirect.com/science/article/pii/S0925838817312598 doi:10.1016/j.jallcom.2017.04.068 doi:10.1016/j.jallcom.2017.04.068 |
| spellingShingle | Semiconductors; Optical materials; Oxide materials; Thin films; Electron-phonon interactions; Photoconductivity and photovoltaics Choudhuri, Bijit Mondal, Aniruddha Dwivedi, Shyam Murli Manohar Dhar Henini, Mohamed Fabrication of novel transparent Co3O4-TiO2 nanowires p-n heterojunction diodes for multiband photodetection applications |
| title | Fabrication of novel transparent Co3O4-TiO2 nanowires p-n heterojunction diodes for multiband photodetection applications |
| title_full | Fabrication of novel transparent Co3O4-TiO2 nanowires p-n heterojunction diodes for multiband photodetection applications |
| title_fullStr | Fabrication of novel transparent Co3O4-TiO2 nanowires p-n heterojunction diodes for multiband photodetection applications |
| title_full_unstemmed | Fabrication of novel transparent Co3O4-TiO2 nanowires p-n heterojunction diodes for multiband photodetection applications |
| title_short | Fabrication of novel transparent Co3O4-TiO2 nanowires p-n heterojunction diodes for multiband photodetection applications |
| title_sort | fabrication of novel transparent co3o4-tio2 nanowires p-n heterojunction diodes for multiband photodetection applications |
| topic | Semiconductors; Optical materials; Oxide materials; Thin films; Electron-phonon interactions; Photoconductivity and photovoltaics |
| url | https://eprints.nottingham.ac.uk/41947/ https://eprints.nottingham.ac.uk/41947/ https://eprints.nottingham.ac.uk/41947/ |