Abstract Herein we present a process for the in situ growth present a process for the in situ growth of CdS nanoparticles using a pulsed laser irradiation. A Nd-YAG laser was applied to ZnO nanorods previously submerged in an aqueous precursor solution containing cadmium chloride and thiourea. For optimum values of the laser fluence, around 40 mJ/cm2 it was possible to fabricate a highly homogeneous film of CdS nanoparticles covering the ZnO nanorods surface. Cathodoluminescence measurements of the CdS/ZnO structure show the quenching of the ZnO yellow and green luminescence, indicating the ZnO surface defects passivation by CdS nanostructures. Although lasers have been already used for inducing growth in solution, this work presents new evidence of in-situ growth on the surface of nanostructured materials. The laser based technique presented is simple, easy to implement, scalable and it could be applied in the fabrication of nanostructured solar cells and other devices.

中文翻译：

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CdS纳米颗粒在ZnO纳米棒表面的原位脉冲激光诱导生长

摘要 在此，我们提出了一种原位生长过程，提出了一种使用脉冲激光照射原位生长 CdS 纳米粒子的过程。将 Nd-YAG 激光应用于预先浸没在含有氯化镉和硫脲的水性前体溶液中的 ZnO 纳米棒。对于激光能量密度的最佳值，大约 40 mJ/cm2 可以制造高度均匀的 CdS 纳米粒子薄膜覆盖在 ZnO 纳米棒表面。CdS/ZnO 结构的阴极发光测量显示 ZnO 黄色和绿色发光的猝灭，表明 CdS 纳米结构钝化了 ZnO 表面缺陷。尽管激光已被用于诱导溶液中的生长，但这项工作提供了纳米结构材料表面原位生长的新证据。