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DC Field | Value | Language |
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dc.contributor.author | Banerjee, I | - |
dc.contributor.author | Faris, T | - |
dc.contributor.author | Stoeva, Z | - |
dc.contributor.author | Harris, PG | - |
dc.contributor.author | Chen, J | - |
dc.contributor.author | Sharma, AK | - |
dc.contributor.author | Ray, AK | - |
dc.date.accessioned | 2016-11-30T13:35:43Z | - |
dc.date.available | 2016-11-30T13:35:43Z | - |
dc.date.issued | 2016 | - |
dc.identifier.citation | 2D Materials, pp. 1-29, (2016) | en_US |
dc.identifier.issn | 2053-1583 | - |
dc.identifier.uri | http://bura.brunel.ac.uk/handle/2438/13555 | - |
dc.description.abstract | Fifteen-layered graphene films have been successfully deposited onto flexible substrates using a commercial ink consisting of graphene particles dispersed in an acrylic polymer binder. A value of 74.9 × 105cm−2 was obtained for the density of defects, primarily located at the flake edges, from the ratio of the D and G Raman peaks located at 1345cm1 and 1575cm1 respectively. 0.5μm thick drop-cast films on interdigitated silver electrodes exhibited Ohmic conduction with a small activation energy of 12meV over the temperature range from 260K to 330K . The photo-thermoelectric effect is believed to be responsible for photoconduction through graphene films under illumination intensity of 10mWm-2 at 270 nm, corresponding to the UV absorption peak. The photo-transient decay at the bias of 1V involves two relaxation processes when the illumination is switched off and values of 8.9 × 103𝑠 and 4.3 × 104𝑠 are found for the relaxation time constant using the Kohlrauch stretched exponential function analysis. | en_US |
dc.description.sponsorship | Dr. Indrani Banerjee is grateful to Commonwealth Association, UK for funding the present research work under the fellowship placement scheme (Grant reference INCF-2014-66). The studentship of Ms Faris is partially sponsored by the Air Force Office of Scientific Research, Air Force Material Command, USAF, under Grant No. FA9550-15-1-0123. We are also thankful to Miss V. M. Torrejon of Brunel University for support in computer graphics. | en_US |
dc.language.iso | en | en_US |
dc.publisher | IOP Publishing | en_US |
dc.title | Graphene films printable on flexible substrates for sensor applications | en_US |
dc.type | Article | en_US |
dc.relation.isPartOf | 2D Materials | - |
pubs.publication-status | Accepted | - |
Appears in Collections: | Dept of Mechanical Aerospace and Civil Engineering Research Papers |
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Fulltext.pdf | 2.12 MB | Adobe PDF | View/Open |
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