Recent progress in piezotronic sensors based on one-dimensional zinc oxide nanostructures and its regularly ordered arrays: From design to application

Growth of highly aligned ZnO nanorod arrays on zinc plates: Morphological and structural characterization

“…It is distinguished by its properties such as its direct band gap energy, high electron mobility [3], being biocompatible [4], antibacterial [5] and low-toxic [5], and by also its tunable electrochemical [6], luminescence, magnetic, optical and electrical properties [7]. Therefore, ZnO is a promising material in applications such as, nanolasers [8], solar cells [9], gas sensors [10], photocatalysis [11], photoluminescence [4], transparent conductive films [12], energy efficient windows [13], field-emission devices, light-emitting diodes, acoustic wave filters, photonic crystals, photo-detectors, varistors, and piezoelectric materials [7,14].…”

“…Therefore, well aligned one-dimensional (1D) array coatings can be more preferred in the fields of electronics, solar cells or sensor applications [17,18]. 2 ZnO nanoscale structures have been produced by methods such as molecular beam epitaxy, pulsed laser deposition, sputtering, anodic alumina oxide template, electrochemical deposition, vapor phase transport, chemical vapor deposition, thermal evaporation, sol-gel and hydrothermal method [1][2][3][4][5][6][7][8][9][10][11][12][13][14]19]. Among them, hydrothermal method is attractive due to its relatively low synthesis temperatures (<100C) and low pressures, and it does not require complex experimental setups [8,20].…”