Morphology and field emission properties of tetrapod shaped Sn doped ZnO nanostructures under different growth times. (November 2015)

• Record Type: Journal Article
• Authors: Lin, M.; Peng, Y.; Zhou, X.; Lin, T.; Zhang, Y.; Hu, J.; Guo, T.
• Is Part Of: Materials technology. Volume 30:Number 6(2015)
• Page Start: 338
• Page End: 343
• Publication Date: 2015-11
• Subjects: ZnO tetrapods, -- Thermal evaporation, -- Field emission, -- Morphology; Materials -- Periodicals; Materials science -- Periodicals; Materials -- Technological innovations -- Periodicals; 620.1105
• DOI: 10.1179/1753555715Y.0000000013
• Languages: English
• ISSNs: 1066-7857

Abstract

Abstract : The morphology, microstructure and field emission (FE) properties of tetrapod shaped Sn doped ZnO (T-SZO) nanostructures grown for different times were investigated. It is found that the morphology, particularly the aspect ratio of the T-SZO, can be controlled by adjusting the growth time and that the aspect ratio affects its FE properties. The aspect ratio increases first with the growth time, and after 90 s, a new series of T-SZO with smaller size and lower aspect ratio appear, leading to the deterioration of the FE properties. The sample grown for 90 s exhibits the highest aspect ratio of 16:5 and the lowest turn on field of 1·82 V μm − 1 .