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HL: Fachverband Halbleiterphysik

HL 44: ZnO and its relatives: Devices

HL 44.3: Vortrag

Dienstag, 1. April 2014, 11:15–11:30, POT 151

Controlled fabrication of ZnO/ZnS core-shell nanotube arrays prepared on anodic aluminum oxide with enhanced photoluminces and electronic properties — •Samar Tarish^1,2, Chengliang Wang¹, Ahmed Al-Haddad^1,2, Zhijie Wang¹, Zhibing Zhan¹, and Yong Lei¹ — ¹Institute for Physics and IMN MacroNano (ZIK), Ilmenau University of Technology, Prof. Schmidt Str. 26, 98693 Ilmenau, Germany. — ²Department of Physics, College of Science, The University of Mustansiryah, Baghdad, Iraq.

Heterostructured ZnO/ZnS core-shell nanotube arrays on the AAO template were fabricated by a two-step growth process. The ZnO nanotubes were first synthesized by atomic layer deposition ,and the ZnO/ZnS composite arrays can be successfully obtained afterwards through sulfartion reaction. The optical properties of the composite nanotubes change as a function of the ZnS shell thickness , and it was found that the UV emission intensity of ZnO/ZnS core-shell nanotubes is stronger than that of ZnO nanotubes. Besides, ZnO/ZnS core shell shows better electric properties than ZnO nanotubes . With the enhanced electrical conductivity comparing with the bare ZnO arrays the intriguing improvement implies the promising utilization of this special ZnO/ZnS heterstuctured nanotubes array configuration in the applications, such as gas and chemical sensing and optical switching applications.