Growth of zinc oxide nanostructures

Pramana

Sanjeev Kumar¹  Jaya Choudhury¹  K Sreenivas1¹  Vinay Gupta¹ 

[1] Department of Physics and Astrophysics, University of Delhi, Delhi 110 007, India$$

关键词: Zinc oxide nanostructures;    magnetron sputtering;    pulsed laser deposition;    sensors.;   

DOI  :  

学科分类：物理（综合）

来源: Indian Academy of Sciences

【 摘 要 】

Zinc oxide (ZnO) nanowhiskers have been prepared using a multilayer ZnO(50 nm)/Zn(20 nm)/ZnO(2 𝜇m) structure on a polished stainless steel (SS) substrate by high rate magnetron sputtering. The formation of uniformly distributed ZnO nanowhiskers with about 20 nm dia. and 2 to 5 𝜇m length was observed after a post-deposition annealing of the prepared structure at 300–400 ° C. An array of highly 𝑐-axis oriented ZnO columns (70–300 nm in dia. and up to 10 𝜇m long) were grown on Si substrates by pulsed laser deposition (PLD) at a high pressure (1 Torr), and Raman studies showed the activation of surface phonon modes. The nanosized powder (15–20 nm) and nanoparticle ZnO films on glass substrate were also prepared by a chemical route. Nanowhiskers showed enhanced UV light detection characteristics, and the chemically prepared ZnO nanoparticle films exhibited good sensing properties for alcohol.

【 授权许可】

Unknown