The role of substrates on the structural, optical, and morphological properties of zno nanotubes prepared by spray pyrolysis

Abstract

ZnO films were deposited onto glass, ITO coated glass, and sapphire substrate by spray pyrolysis, and subsequently annealed at the same temperature of 400°C for 3 h. The role of substrate on the properties of ZnO films was investigated. The structural and optical properties of the films were investigated by X-ray diffractometer (XRD) and photoluminescence (PL) spectrophotometer, respectively. The surface morphology of the nanostructured ZnO film was investigated by scanning electron microscopy (SEM) and atomic force microscopy (AFM). Crystallographic properties revealed that the ZnO films deposited on sapphire and ITO substrates exhibit a strong c-axis orientation of grains with hexagonal wurtzite structure. Extremely high UV emission intensity was determined in the film on ITO. The different luminescence behaviors was discussed, which would be caused by least value of strain in the film. Films grown on different substrates revealed differences in the morphology. ZnO films on ITO and sapphire substrates revealed better morphology than that of the film on glass. AFM images of the films prepared on ITO show uniform distribution of grains with large surface roughness, suitable for application in dye sensitized solar cells.

Spray Pyrolysis Technique; High-K Dielectric Films and Luminescent Materials: A Review

“…A study on the role of substrates on the structural, optical, and morphological properties of ZnO films (nanotubes) was also reported in 2014 [132]. The role of substrate on the properties of ZnO films was investigated; these films were deposited onto glass, ITO coated glass and sapphire substrate and annealed at 400 °C for 3 hours.…”

Investigation of structural, optical, and electrical properties of the (CuO/ZnO:Al/SnO2:F) heterostructure thin films using the spin coating method

“…Transparent conductive oxide thin films obtained by semiconductor technology have been widely studied in recent years thanks to their optical permeability and high electrical conductivity. Transparent conductive oxide layers are used in photodiode production, solar cells, touch screens (Chen, Su, Chang, & Tsai, 2017; Vijayalakshmi & Karthick, 2014), display devices (Livage & Ganguli, 2001), and electronic devices (Song et al, 2020). As one of transparent conductors, ZnO is particularly preferred in semiconductor device productions in recent years (Gu, Wang, Zhang, & Fang, 2010; Kara et al, 2016; Singh & Bedi, 2011; Tsay & Lee, 2013; Tsay, Wu, Lei, Chen, & Lin, 2010).…”