In this report, pristine TiO₂ nanowire (NW) and gold (Au) nanoparticles (NP) decorated TiO₂-NW are synthesized by glancing angle deposition (GLAD) technique on Si substrate. Transmission electron microscopy (TEM) exhibits the vertical growth of TiO₂-NW. The average length and diameter of TiO₂-NWs are ∼110 nm and ∼15 nm, respectively and Au-NP has an average diameter of ∼7 nm. Selected area electron diffraction (SAED) and x-ray diffraction (XRD) analyses confirm the polycrystalline nature of synthesized TiO₂-NW and Au-NP. Photoluminescence (PL) emission is reduced for the sample Au-NP:TiO₂-NW as compared to TiO₂-NW. The enhanced Raman scattering and optical absorption are observed for the sample Au-NP:TiO₂-NW compared to TiO₂-NW. Improved performance in terms of current density, responsivity, detectivity, noise equivalent power (NEP), and photo-switching were obtained for device Au-NP:TiO₂-NW as compared to TiO₂-NW in both UV and visible region. The superior performances of the Au-NP:TiO₂-NW device establishes it as a potential and promising candidate for photodetector application.

中文翻译：

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金属表面等离子体敏化二氧化钛纳米线的光学和电学性能增强

在本报告中，原始的 TiO ₂纳米线 (NW) 和金 (Au) 纳米粒子 (NP) 装饰的 TiO ₂ -NW 是通过在硅衬底上的掠射角沉积 (GLAD) 技术合成的。透射电子显微镜 (TEM) 显示出 TiO ₂ -NW的垂直生长。TiO ₂ -NWs的平均长度和直径分别为~110 nm 和~15 nm，Au-NP 的平均直径为~7 nm。选区电子衍射 (SAED) 和 X 射线衍射 (XRD) 分析证实了合成的 TiO ₂ -NW 和 Au-NP的多晶性质。与 TiO ₂相比，样品 Au-NP:TiO ₂ -NW 的光致发光 (PL) 发射降低-西北。所述增强拉曼散射和光吸收被观察到样品的Au-NP：的TiO ₂ -NW相比的TiO ₂ -NW。与 TiO ₂ -NW 在紫外和可见光区域相比，器件 Au-NP:TiO ₂ -NW在电流密度、响应度、探测率、噪声等效功率 (NEP) 和光开关方面获得了改进的性能。Au-NP:TiO ₂ -NW 器件的卓越性能使其成为光电探测器应用的潜在和有前途的候选者。