Structural and optical studies on spin coated ZnO-Graphene conjugated thin films

Authors
Srinatha, N.Choi, W. K.Son, D. I.Angadi, Basavaraj
Issue Date
2018-11
Publisher
AMER INST PHYSICS
Citation
2nd International Conference on Condensed Matter and Applied Physics (ICC)
Abstract
ZnO-Graphene conjugated thin films were prepared using spin coating technique for different spin rates. Prior to the deposition, ZnO-Graphene nanoparticles were synthesized and their particle size and conjugation was studied through Transmission electron microscope (TEM). The deposited films were characterized using grazing incidence x-ray diffractometer (GIXRD), atomic force microscope (AFM) and UV-Visible spectrometer for their crystallinity, surface topographic features and optical properties. GIXRD patterns confirms the presence of both ZnO and Graphene related crystalline peaks supports the TEM results, which shows the quasi core-shell type conjugation of ZnO-Graphene particles. The crystallinity as well as thickness of the films found to decrease with increase of spin rate. AFM results reveal the uniform, smooth and homogeneity of films and also good adhesivity of ZnO-Graphene with glass substrates. No significant change in the transmittance and absorption with spin rate is observed, while the band gap energy found to decrease due to the reduction in the thickness of the films and conjugation of ZnO-Graphene. All films exhibit similar to 90 % transmittance in the visible wavelength region, could be potential candidates for optoelectronics and transparent conducting oxide (TCO) applications.
ISSN
0094-243X
URI
https://pubs.kist.re.kr/handle/201004/114336
DOI
10.1063/1.5032978
Appears in Collections:
KIST Conference Paper > 2018
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