Fabrication of ZnO Thin Film through Chemical Preparations

Abstract

Zinc oxide (ZnO) is a compound that has unique physical and chemical properties. It has a direct band gap at 3.4 eV (without dopant), a high bonding energy (60 meV), and a high thermal and mechanical stability at room temperature. Thus, ZnO thin film can be suitably applied in many fields, and it also has many functions such as UV light emitters, hydrophobic coating, transparent thin film in electronic devices, piezoelectric material, transducers, gas-sensing, and a transparent conductive oxide (TCO) layer in thin film solar cells. ZnO thin film could be prepared by many chemical preparations such as chemical bat deposition (CBD), chemical vapor deposition (CVD), sol-gel spin coating, doctor blade, printing deposition, and electrochemical deposition (ED). This chemical process is a low-cost, simple, and easy preparation process to be adjusted or doped by other elements.

Influence of the Nature of Aminoalcohol on ZnO Films Formed by Sol-Gel Methods

“…Moreover, ZnO doping allows tailoring its electronic and optical properties and may provide multifunctional materials with improved properties or even new ones with potential interest in other areas, for instance, dilute magnetic semiconductors (DMSs) for spintronics [ 1 , 2 , 4 , 5 , 6 , 7 , 8 ]. Besides, ZnO-derived nanomaterials, pellets and thin films are gaining relevance in a wider range of areas (i.e., agriculture and biomedicine [ 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 ]).…”

“…This is mainly due to their utility in electronics, optics, optoelectronics, engineering, and, especially, for the design of new devices (photodetectors, gas sensors and also biosensors, light-emitting diodes, transparent electrodes and transparent thin-film transistors, among others) [ 1 , 2 , 4 , 6 , 11 , 12 , 13 ]. It is widely accepted that they are the most promising candidates to achieve low-cost and non-toxic new devices suitable for novel and improved technologies [ 1 , 2 , 6 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 ], (e.g., solar energy conversion) [ 17 , 18 ] and, therefore, they are becoming more and more popular.…”

Preparation of Very Thin Zinc Oxide Films by Liquid Deposition Process: Review of Key Processing Parameters

“…Zinc oxide (ZnO) is a well-known material for its large spectrum of interesting properties and possible applications [1][2][3][4][5][6]. Actual or potential devices applications include solar cells [7][8][9][10][11], photocatalysis [12][13][14][15][16], piezoelectric nanogenerators [17,18], UV light emitters [19,20], transparent transistors [21,22], memory devices [23,24], acousto-optic devices [25,26] and gas sensors [27,28]. These various applications require the control of the layer morphology from a microscopically homogeneous and flat surface to a nanoscale designed surface.…”

High‐Efficiency Adsorptive Removal of Phenol from Aqueous Solution Using Natural Red Clay and ZnO Nanoparticles

“…It has unique chemical and physical properties. Of these, its antibacterial properties, [28] nontoxic material that is safe for humans and animals, [29] high chemical and mechanical stability, [30] high catalyses activity, [31] it has a wide range of radiation absorption, [32] electrochemical coupling coefficient, [32c,33] heat stability, high selectivity and durability [34] . It has been widely used in different fields, including the food, pharmaceutical and cosmetic industry, coating and paints, textile, rubber, electronics and electrotechnology industries [32c,35] …”