• Inﬂuence of drying conditions on the optical and structural properties of sol–gel-derived ZnO nanocrystalline ﬁlms

• # Fulltext

https://www.ias.ac.in/article/fulltext/pram/076/06/0973-0983

• # Keywords

ZnO; nanocrystalline ﬁlms; drying; sol–gel.

• # Abstract

Zinc oxide nanothin ﬁlms were prepared on glass substrate by sol–gel dip-coating method using zinc acetate dihydrate, methanol, and monoethanolamine as precursor, solvent, and stabilizer, respectively. The relationship between drying conditions and the characteristics of ZnO nanocrystalline ﬁlms (𝑐-axis orientation, grain size, roughness and optical properties) was studied. The ﬁlms were dried in an oven at different temperatures and by IR radiation. Then, the ﬁlms were annealed at $500^{\circ}$C in a furnace. The chemical composition, transmission spectra, structure, and morphology of the samples were studied using infrared (IR) and UV–visible spectroscopy, X-ray diffraction (XRD), and atomic force microscopy (AFM), respectively. The XRD results show that the drying conditions affect the orientation of crystallization along the (0 0 2) plane. AFM images show that the thicknesses of the ﬁlms decrease from 128 to 93 nm by changing the drying conditions. The photoluminescence (PL) of ZnO nanothin ﬁlms shows the UV emission at near band edge and broad green radiation at about 465 nm wavelength.

• # Author Affiliations

1. Department of Physics, Faculty of Science, The University of Guilan, Namjoo Ave., P.O. Box 41335-1914, Rasht, Iran

• # Pramana – Journal of Physics

Volume 96, 2022
All articles
Continuous Article Publishing mode

• # Editorial Note on Continuous Article Publication

Posted on July 25, 2019