Fig. 1.
(Color online) Schematic illustrations for the preparation of RGO-ZnO films.
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Weiqiang Shuai, Yuehui Hu, Yichuan Chen, Keyan Hu, Xiaohua Zhang, Wenjun Zhu, Fan Tong, Zixuan Lao. Composite structure of ZnO films coated with reduced graphene oxide: structural, electrical and electrochemical properties[J]. Journal of Semiconductors, 2018, 39(2): 023001. doi: 10.1088/1674-4926/39/2/023001
W Q Shuai, Y H Hu, Y C Chen, K Y Hu, X H Zhang, W J Zhu, F Tong, Z X Lao. Composite structure of ZnO films coated with reduced graphene oxide: structural, electrical and electrochemical properties[J]. J. Semicond., 2018, 39(2): 023001. doi: 10.1088/1674-4926/39/2/023001.
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Composite structure of ZnO films coated with reduced graphene oxide: structural, electrical and electrochemical properties
doi: 10.1088/1674-4926/39/2/023001
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Abstract
ZnO films coated with reduced graphene oxide (RGO-ZnO) were prepared by a simple chemical approach. The graphene oxide (GO) films transferred onto ZnO films by spin coating were reduced to RGO films by two steps (exposed to hydrazine vapor for 12 h and annealed at 600 °C). The crystal structures, electrical and photoluminescence properties of RGO-ZnO films on quartz substrates were systematically studied. The SEM images illustrated that RGO layers have successfully been coated on the ZnO films very tightly. The PL properties of RGO-ZnO were studied. PL spectra show two sharp peaks at 390 nm and a broad visible emission around 490 nm. The resistivity of RGO-ZnO films was measured by a Hall measurement system, RGO as nanofiller considerably decrease the resistivity of ZnO films. An electrode was fabricated, using RGO-ZnO films deposited on Si substrate as active materials, for super capacitor application. By comparison of different results, we conclude that the RGO-ZnO composite material couples possess the properties of super capacitor.-
Keywords:
- RGO-ZnO films,
- spin coating,
- electrode,
- super capacitor application
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References
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