Hierarchical zinc oxide nanobrushes ultraviolet photodetector

In order to synthesise hierarchical zinc oxide (ZnO) nanomaterials with a high surface-to-volume ratio, well-controlled multistage hydrothermal method was developed. Hierarchical ZnO nanobrushes (ZNBs) built from initial mono-morphological nanomaterials, nanowires (ZNWs), and nanoplates (ZNPs) were developed using sequential nucleation growth following process. which are comprised of one-dimensional (1D) nanowire building blocks obtained via ion source (zinc nitrate) during the second phase. comparison their first equivalents, grown showed improved ultraviolet (UV) detection, as well sensitivity (?104), an ultra-fast response time (235 ms), good recovery (310 ms). Improvements times result distinct nanojunction barrier-dominated resistance. Moreover, enhanced ZNB photodetector (PD) because reduced dimensionality ultrahigh ratio. This work lays groundwork for lower-cost, larger-scale, lower-temperature production high-performance nanostructured ZnO-based PDs on transparent flexible substrates.