Precursor concentrations effect on the morphological, structural and optical properties of ZnO thin films.
Elyazid MAHBOUB a, Ahmed EL HICHOU a, Mohammed MANSORI a
a Cadi Ayyad University, Morocco, Avenue Abdelkrim Al Khattabi, Rabat, Morocco
nanoGe Perovskite Conferences
Proceedings of International online conference on Hybrid materials and optoelectronic devices (HYBRIDOE)
Online, Spain, 2020 December 15th - 17th
Organizers: Xueqing Xu, Baomin Xu, Hin-Lap (Angus) Yip and Xinhua Zhong
Poster, Elyazid MAHBOUB, 039
Publication date: 4th December 2020

The zinc chloride is one of the precursors used to deposit the zinc oxide (ZnO) thin films by sol-gel spin coating technique from aqueous solution onto glasses substrates at optimum conditions. The effect of the concentration of precursor on the structural, optical and electrical properties of ZnO thin films has been investigated. The X-ray diffraction analysis showed typical patterns of the hexagonal ZnO structure for all films. The films were polycrystalline with the   (002) preferred orientation. The grain size and optical band gap were evaluated for different concentrations. The optical transmittance measurements of ZnO thin films showed that all films are transparent in the visible regions and decrease with increase the ZnCl2 concentration. The film with 0.4 M ZnCl2 has a high crystallographic quality with an energy band gap of 3.21 eV.

The produced ZnO thin films at optimum conditions may be useful for specific applications as transparent n-type windows in solar cells for sensor devices where large surface areas are needed

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