Charge transport in lightly reduced graphene oxide : a transport energy perspective
Significant variation in the charge transport behaviour in graphene oxide (GO) ranging from Schottky to Poole-Frenkel and to space charge limited transport exists. These have been extensively reported in the literature. However, the validity of such conventional charge transport models meant for d...
| Những tác giả chính: | , , , , , , , , |
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| Định dạng: | Journal Article |
| Ngôn ngữ: | English |
| Được phát hành: |
2013
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| Những chủ đề: | |
| Truy cập trực tuyến: | https://hdl.handle.net/10356/96393 http://hdl.handle.net/10220/9932 |
| _version_ | 1826109867668013056 |
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| author | Kajen, R. S. Pey, Kin Leong Vijila, C. Jaiswal, M. Saravanan, S. Ng, Andrew M. H. Wong, C. P. Loh, K. P. Chandrasekhar, Natarajan |
| author2 | School of Electrical and Electronic Engineering |
| author_facet | School of Electrical and Electronic Engineering Kajen, R. S. Pey, Kin Leong Vijila, C. Jaiswal, M. Saravanan, S. Ng, Andrew M. H. Wong, C. P. Loh, K. P. Chandrasekhar, Natarajan |
| author_sort | Kajen, R. S. |
| collection | NTU |
| description | Significant variation in the charge transport behaviour in graphene oxide (GO) ranging from Schottky to
Poole-Frenkel and to space charge limited transport exists. These have been extensively reported in the
literature. However, the validity of such conventional charge transport models meant for delocalized
carriers, to study charge transport through localised states in GO, a disordered semiconductor is open to
question. In this work, we use the concept of transport energy (TE) to model charge transport in lightly
reduced GO (RGO) and demonstrate that the TE calculations match well with temperature dependent
experimental I-V data on RGO. We report on a temperature dependent TE ranging from a few 10meV
to 0.1 eV in slightly reduced GO. Last, we point out that, despite the success of several delocalised
charge transport models in estimating barrier heights that resemble the TE level, they remain largely
accidental and lack the insight in which the TE concept provides in understanding charge transport in
RGO. |
| first_indexed | 2024-10-01T02:25:26Z |
| format | Journal Article |
| id | ntu-10356/96393 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T02:25:26Z |
| publishDate | 2013 |
| record_format | dspace |
| spelling | ntu-10356/963932023-02-28T19:40:15Z Charge transport in lightly reduced graphene oxide : a transport energy perspective Kajen, R. S. Pey, Kin Leong Vijila, C. Jaiswal, M. Saravanan, S. Ng, Andrew M. H. Wong, C. P. Loh, K. P. Chandrasekhar, Natarajan School of Electrical and Electronic Engineering DRNTU::Engineering::Electrical and electronic engineering Significant variation in the charge transport behaviour in graphene oxide (GO) ranging from Schottky to Poole-Frenkel and to space charge limited transport exists. These have been extensively reported in the literature. However, the validity of such conventional charge transport models meant for delocalized carriers, to study charge transport through localised states in GO, a disordered semiconductor is open to question. In this work, we use the concept of transport energy (TE) to model charge transport in lightly reduced GO (RGO) and demonstrate that the TE calculations match well with temperature dependent experimental I-V data on RGO. We report on a temperature dependent TE ranging from a few 10meV to 0.1 eV in slightly reduced GO. Last, we point out that, despite the success of several delocalised charge transport models in estimating barrier heights that resemble the TE level, they remain largely accidental and lack the insight in which the TE concept provides in understanding charge transport in RGO. Published version 2013-05-13T07:38:01Z 2019-12-06T19:29:53Z 2013-05-13T07:38:01Z 2019-12-06T19:29:53Z 2013 2013 Journal Article Kajen, R. S., Chandrasekhar, N., Pey, K. L., Vijila, C., Jaiswal, M., Saravanan, S., et al. (2013). Charge transport in lightly reduced graphene oxide: A transport energy perspective. Journal of Applied Physics, 113(6). 00218979 https://hdl.handle.net/10356/96393 http://hdl.handle.net/10220/9932 10.1063/1.4792042 en Journal of applied physics © 2013 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/10.1063/1.4792042. 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 | DRNTU::Engineering::Electrical and electronic engineering Kajen, R. S. Pey, Kin Leong Vijila, C. Jaiswal, M. Saravanan, S. Ng, Andrew M. H. Wong, C. P. Loh, K. P. Chandrasekhar, Natarajan Charge transport in lightly reduced graphene oxide : a transport energy perspective |
| title | Charge transport in lightly reduced graphene oxide : a transport energy perspective |
| title_full | Charge transport in lightly reduced graphene oxide : a transport energy perspective |
| title_fullStr | Charge transport in lightly reduced graphene oxide : a transport energy perspective |
| title_full_unstemmed | Charge transport in lightly reduced graphene oxide : a transport energy perspective |
| title_short | Charge transport in lightly reduced graphene oxide : a transport energy perspective |
| title_sort | charge transport in lightly reduced graphene oxide a transport energy perspective |
| topic | DRNTU::Engineering::Electrical and electronic engineering |
| url | https://hdl.handle.net/10356/96393 http://hdl.handle.net/10220/9932 |
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