Sifat Optik Lapisan Tipis ZnO

Aris Doyan, Humaini Humaini

Abstract

The aim of this research is to manufacture and characterize optical properties of ZnO thin layer which is deposited on glass substrate by sol-gel spin-coating method, through the process of growing ZnO thin layer of zinc acetate dehydrate (ZnAc) precursor on glass substrate with spin speed 2000 rpm for 30 minutes on a spin coater plate. The growth of layers by the sol-gel method of spin-coating is determined by the length of time of spin rotation which is related to the thickness of the thin layer. The Samples on the substrate in anneling at 400 oC and 500 oC for 1.5 hours to obtain a thin layer of ZnO. The obtained layer was characterized by UV-Vis test to determine the optical properties of the coating which include absorbance, transmittance, and bandgap energy. UV-Vis testing states that, the higher concentration of ZnO solution then the layer looks increasingly not transparent so that the transmittance value is smaller, otherwise the absorbance value of the layer becomes higher. This is indicated by the results obtained, at 1 M molarity concentration obtained the value of transmittance (50. 40%), while at a concentration of 0.7 M obtained greater transmittance value (75.24%) at the same heating temperature 500 oC. The gap energy is a forbidden area where electrons are located between the valence bands filled by the electrons and the empty conduction bands of the electrons. With respect to the photon energy to excite the electrons, the annealing treatment will affect the magnitude of the gap energy. High annearance temperature obtained a smaller gap energy compared with lower anneling temperatures. The obtained energy gap of 2.1 eV at 400 °C annealing temperature is greater than 0.1 eV compared to the heating temperature of 500 oC at 2.0 eV.

Keywords

ZnO; sol-gel spin coating

Full Text:

PDF

References

Baruah S., Samir K. P., Dutta J. Nanostructured Zinc Oxide for water treatment, Nanoscience and nanotechnology Asia, 2012, Vol.2,No.2

Doyan A., Susilawati, Fitri S.A., Ahzan A. 2017, Crystal Structure Characterization of Thin Layer Zinc Oxide, IOP Conf. Series: Materials Science and Engineering 196 (2017) 012004 doi:10.1088/1757-899X/196/1/012004

Doyan, A., Susilawati, Yanika D.I., 2017. Synthesis and Characterization of SnO2 thin layer with a doping Aluminum is deposited on Quartz Substrates. The 6th International Conference On Theoretical And Applied Physics (Ictap-2016). September 19-21, 2016, Makassar, South Sulawesi, Indonesia.

Gupta.,P.K. Shishoda., A.Kapoor., et.all (2010), Journal Of Non Crystallin Solids 297 (p-31).

Hoffmann A.; Claus Franz Klingshirm; Bruno K. Meyer; Andreas Waag; Johannes M. M. Geurts 2010, Zinc Oxide: From Fundamental Properties Towards Novel Application. Springer. Pp. 9-10. ISBN 978-3-642-10576-0

Kusnandar A., Rachmawati H. Budi putra D.K. Suhandono S., 2013. Curcumin Nanoemultion for transdermal application: formulation and evaluation, Proceedings Workshop Nanotechnology, Des 2013 Vol. 1, No.1, ISSN : 2356 - 3303

Lawrence, H Robins, Jeremiah R. Lowney, and Dennis K. Wickenden. 1998. Chatodoluminescence, and Optikal Absorbance Spectroscopy of Aluminium Gallium Nitride (AlxGa1-xN) film. Jurnal mater. Res. Vol.13. no. 9 sep 1998

Mikrajuddin Abdullah. dan Khairurrijal, 2010, Karakterisasi Nanomaterial, Jurnal Nanosains dan Nanoteknologi, Vol.2, No. 1, ISSN 1979-0880

Zhang, W., Duan, L., Lin, B., Zhong, S., Fu, Z., 2006, Enhancement Of Ultraviolet Emissions From Zno Film By Ag Doping. Appl. Phys. Lett. 88, 232110 (2006); doi: http://dx.doi.org/10.1063/1.2211053

Refbacks

  • There are currently no refbacks.