J. Mater. Sci. Technol. ›› 2019, Vol. 35 ›› Issue (1): 151-158.DOI: 10.1016/j.jmst.2018.09.017
• Orginal Article • Previous Articles Next Articles
Manash Jyoti Deka, Devasish Chowdhury*()
Received:
2018-03-13
Revised:
2018-06-01
Accepted:
2018-07-04
Online:
2019-01-04
Published:
2019-01-15
Contact:
Chowdhury Devasish
Manash Jyoti Deka, Devasish Chowdhury. Surface charge induced tuning of electrical properties of CVD assisted graphene and functionalized graphene sheets[J]. J. Mater. Sci. Technol., 2019, 35(1): 151-158.
Scheme 1 Schematic illustration of transfer process of CVD grown graphene and synthesis of different surface charge immobilized carbon nanomaterials on graphene and functionalized graphene systems.
Fig. 3. Representative SEM images of (A) bare copper surface annealed at 850?°C, (B) and (C) as-grown graphene on copper substrate, (D) transferred graphene on silicon substrate, (E) tea carbon dots (CDTea), and (F) chitosan-carbon dots (CDCh) immobilized on transfer graphene.
Sample name | D-band (cm-1) | G-band (cm-1) | ID/IG |
---|---|---|---|
Grp-CDCh | 1379 | 1585 | 0.60 |
Grp-CDTea | 1374 | 1586 | 0.62 |
Table 1 Calculation of ID/IG ratio of Grp-CDCh and Grp-CDTea.
Sample name | D-band (cm-1) | G-band (cm-1) | ID/IG |
---|---|---|---|
Grp-CDCh | 1379 | 1585 | 0.60 |
Grp-CDTea | 1374 | 1586 | 0.62 |
Scheme 2 Schematic representation of the probable mechanism for the difference in conductivity of tea and chitosan-carbon dots immobilized graphene system.
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