Optimized Deposition of Graphene Oxide Langmuir-Blodgett Thin Films

Open access

Abstract

Single sheet graphene (SG) is an innovative transparent material with high electrical and thermal conduction the use of which in transparent electrodes instead of traditional materials improves the performance of optoelectronic devices. In this study, graphene oxide (GO) has been obtained by a modified Hummer`s method followed by an advanced technique of water removal (lyophilisation). The Langmuir-Blodgett (LB) method was applied to transfer GO from suspension to substrate. To optimize the deposition process, as suspending and spreading solvents the benzene and benzene/methanol mixtures were chosen instead of previously studied water suspensions. The number of GO layers in suspension is reduced by exfoliation in order to obtain a single GO monolayer. For this purpose, sonication and centrifugation of GO sheets are carried out. Finally, the effect of variously treated glass substrate surfaces on the deposition efficiency has been studied. In the work, it is shown that ozonization of glass substrate improves the deposition outcome, while ozonization of indium tin oxide (ITO) glass substrate is necessary to perform such deposition. The obtained GO suspensions and LB thin films have been studied using a scanning electron microscope (SEM)

1. Gengler, R.Y.N., Veligura, A., Enotiadis, A., Diamanti, E.K., Gournis, D., Jozsa, C., van Wees, B.J., & Rudolf, P. (2010). Large-yield preparation of high-electronic-quality graphene by a Langmuir-Schaefer approach. Small, (8), 35-9.

2. Wassei, J.K., & Kaner, R.B. (2010). Graphene, a promising transparent conductor.Mater. Today, 13, 52-9.

3. Shao, Y., Wang, J., Wu, H., Liu, J., Aksay, I.A., & Lin, Y. (2010). Graphene based electrochemical sensors and biosensors: a review. Electroanalysis, 22, 1027-36.

4. Geim, A.K. (2009) Graphene: status and prospects. Science, 324, 1530-4

5. Liang, X., Fu, Z., & Chou, S.Y. (2007) Graphene transistors fabricated via transferprinting in device active-areas on large wafer. Nano. Lett., (7), 3840-4.

6. De, S., King, P.J., Lotya, M., O`Neill, A., Doherty, E.M., Hernandez, Y., Duesberg, G.S., & Coleman, J.N. (2010). Flexible, transparent, conducting films of randomly stacked graphene from surfactant-stabilized, oxide-free graphene dispersions. Small, (6), 458-64.

7. Huang, N.M., Lim, H.N., Chia, C.H., Yarmo, M.A., & Muhamad, M.R. (2011). Simple room-temperature preparation of high-yield large-area graphene oxide. Int. J. Nanomed, (6), 3443-8.

8. Cote, L.j., Kim, F., & Huang, J. (2009) Langmuir-Blodgett assembly of graphite oxide single layers. J. Am. Chem., 131, 1043-9.

9. Dimiev, A., Kosynkin, D.V., Alemany, L.B., Chaguine, P., & Tour, J.M. (2012). Pristine graphite oxide. JACS, 134, 2815-22.

10. McAllister, M.J., Li, J.L., Adamson, D.H., Schniepp, H.C., Abdala, A.A., & Liu, J. (2007). Single sheet functionalized graphene by oxidation and thermal expansion of graphite. Chem. Mater., 19, 1396-404

11. Cote, L.J., Kim, J., Tung, V.C., Luo, J., Kim, F., & Huang, J. (2010). Graphene oxide as surfactant sheets. Pure Appl. Chem., 83, 95-10.

12. Kim, F., Cote, L.J., Huang, J. (2010) Graphene oxide: surface activity and twodimensional assembly. Adv. Mater., 22, 1954-8

Latvian Journal of Physics and Technical Sciences

The Journal of Institute of Physical Energetics

Journal Information


CiteScore 2018: 0.32

SCImago Journal Rank (SJR) 2018: 0.147
Source Normalized Impact per Paper (SNIP) 2018: 0.325

Metrics

All Time Past Year Past 30 Days
Abstract Views 0 0 0
Full Text Views 322 211 6
PDF Downloads 100 74 5