Horizontally ordered TiO₂ nanotubes with different wall thicknesses were fabricated by three processes: electrospinning, pulse laser deposition and annealing. Scanning electron microscopy (SEM), transmission electron microscopy (TEM), Raman spectroscopy X-ray photoelectron spectroscopy (XPS) and ultraviolet–visible (UV–vis) absorption were used to characterize the morphology, crystal structure, surface element composition and band gap of the nanotubes. The photodetectors were fabricated by assembling horizontally ordered TiO₂ nanotubes with different wall thickness on the gold interdigital electrode, and their ultraviolet (UV) detection was compared. The results indicated that the TiO₂ nanotubes with a wall thickness of 39 nm have the better UV response and fast response recovery speed under 365 nm illumination with power density of 4.9 mW/cm². The UV response mechanism and advantages of the horizontally ordered TiO₂ nanotubes were also discussed.

通过三种方法制备了具有不同壁厚的水平排列的TiO ₂纳米管：静电纺丝，脉冲激光沉积和退火。扫描电子显微镜（SEM），透射电子显微镜（TEM），拉曼光谱X射线光电子能谱（XPS）和紫外-可见（UV-vis）吸收用于表征形态，晶体结构，表面元素组成和带隙的纳米管。通过将具有不同壁厚的水平有序TiO ₂纳米管组装在金叉指电极上来制造光电探测器，并比较其紫外（UV）检测。结果表明，TiO ₂壁厚为39 nm的纳米管在365 nm的光照下具有更好的UV响应和更快的响应恢复速度，功率密度为4.9 mW / cm ²。还讨论了水平排列的TiO ₂纳米管的紫外线响应机理和优点。