Electrically stimulated depositions of CdS nanoparticles on the surface of aligned multi-walled carbon nanotube (CNT) arrays were investigated by applying a voltage of 3 V to the electrodes placed into a chemical bath with an aqueous ammonium solution of CdCl₂ and thiourea. The CNT arrays were fixed on positive, negative, and neutral electrodes. Morphology, composition and structure of CdS-CNT hybrids were studied using scanning electron microscopy, Raman scattering and X-ray photoelectron spectroscopy. CdS nanocrystallites in the hybrids were found to exhibit synthesis-dependent luminescence properties. S-vacancy enriched CdS grown on the positively charged CNT array possessed red photoluminescence (PL). Purple emission was attributed to small-size CdS nanocrystals synthesized on the negatively charged CNTs. The CNT array located on a neutral electrode was uniformly covered by CdS nanoparticles with a highly intense blue PL. Our results indicate a promising effect of the electrical field for enhancement of the growth rate of CdS nanocrystals.

通过将3 V电压施加到放置在化学浴中的CdCl ₂铵水溶液中的电极，研究了在对准的多壁碳纳米管（CNT）阵列表面上CdS纳米粒子的电刺激沉积和硫脲。CNT阵列固定在正极，负极和中性电极上。利用扫描电子显微镜，拉曼散射和X射线光电子能谱研究了CdS-CNT杂化体的形貌，组成和结构。发现杂化物中的CdS纳米微晶表现出依赖于合成的发光特性。在带正电的CNT阵列上生长的富含S空位的CdS具有红色光致发光（PL）。紫色发射归因于在带负电的CNT上合成的小尺寸CdS纳米晶体。位于中性电极上的CNT阵列被具有高强度蓝色PL的CdS纳米颗粒均匀覆盖。我们的结果表明，电场对提高CdS纳米晶体的生长速度具有令人鼓舞的作用。