Ultraviolet (UV) detection is an important index, as UV rays can cause skin diseases in humans. To enhance the performance of UV photodetectors, we fabricated palladium nanoparticles- (Pd NPs) modified ZnO nanorods. The surface morphology is observed by using transmission electron microscopy and transmission electron microscopy. The crystal structure is analysed by using X-ray diffraction. The optical property is investigated by using photoluminescence spectra. The $\text{I}_{\mathrm {dark}}$ of the ZnO and Pd/ZnO samples was $5.05\times 10^{-8}$ and $2.24 \times 10^{-9}$ A when a 1 V bias was applied. On the other hand, the $\text{I}_{\mathrm {photo}}$ of the ZnO and Pd/ZnO samples was $2.56\times 10^{-6}$ and $4.38\times 10^{-6}$ A when the sample is illuminated UV light (365 nm). The current ratio of $\text{I}_{\mathrm {photo}}/\text{I}_{\mathrm {dark}}$ for the ZnO and Pd/ZnO samples was 50.8 and 1960, respectively. The enhanced performance of the Pd NPs can produce a strong electric field after light is absorbed via the localised surface plasmon resonance effect.

中文翻译：

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Pd纳米颗粒吸附ZnO纳米棒增强光电探测器的UV传感性能

紫外线（UV）检测是一项重要指标，因为紫外线会导致人体皮肤疾病。为了增强紫外线光电探测器的性能，我们制造了钯纳米颗粒-（Pd NPs）修饰的ZnO纳米棒。通过使用透射电子显微镜和透射电子显微镜观察表面形态。通过使用X射线衍射分析晶体结构。通过使用光致发光光谱来研究光学性质。这 $ \ text {I} _ {\ mathrm {dark}} $ ZnO和Pd / ZnO样品的数量为 $ 5.05 \次10 ^ {-8} $ 和 $ 2.24 \次10 ^ {-9} $ 施加1 V偏压时的A。另一方面， $ \ text {I} _ {\ mathrm {photo}} $ ZnO和Pd / ZnO样品的数量为 $ 2.56 \乘以10 ^ {-6} $ 和 $ 4.38 \次10 ^ {-6} $ 当样品被紫外光（365 nm）照射时为A。当前比率 $ \ text {I} _ {\ mathrm {photo}} / \ text {I} _ {\ mathrm {dark}} $ ZnO和Pd / ZnO的样品分别为50.8和1960。通过局部表面等离子体激元共振效应吸收光后，Pd NPs增强的性能可以产生强电场。