Hysteresis and charge trapping in graphene quantum dots
IR@CECRI: CSIR-Central Electrochemical Research Institute, Karaikudi
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| Title |
Hysteresis and charge trapping in graphene quantum dots
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| Creator |
Hemen, Kalita
Harikrishnan, V Dhanraj, B. Shinde Vijayamohanan, K.Pillai Aslam, M |
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| Subject |
Electrochemical Sensors
Functional Materials Nanotechnology Electrochemical Analysis Electrochemical Materials Science |
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| Description |
We report current hysteresis in response to applied voltage in graphene quantum dots of average diameter 4.5±0.55 nm, synthesized electrochemically using multiwalled carbon nanotubes. In response to step voltages, transient current decay characteristic of deep and shallow level charge traps with time constants 186 ms and 6 s is observed. Discharging current transients indicate charge storage of the order of 100 µC. Trap states are believed to arise due to the fast physisorption of external adsorbates,which are found to havea significant effect on charge transport and changes the resistance of the prepared device by an order of 3.
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| Publisher |
Springer-Verlag
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| Date |
2013
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| Type |
Article
NonPeerReviewed |
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| Format |
application/msword
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| Identifier |
http://cecri.csircentral.net/3042/1/Hysteresis_and_charge_trapping_in_graphene_quantum_dots.doc
Hemen, Kalita and Harikrishnan, V and Dhanraj, B. Shinde and Vijayamohanan, K.Pillai and Aslam, M (2013) Hysteresis and charge trapping in graphene quantum dots. Applied Physics Letters, 102 (14). p. 3104. ISSN 0003-6951 (Submitted) |
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| Relation |
http://cecri.csircentral.net/3042/
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