Hydrothermally Grown ZnO Micro/Nanotube Arrays and Their Properties
1 College of Chemistry and Chemical Engineering, Harbin Normal University, 150025, Harbin, People’s Republic of China
2 Wuhan National Laboratory for Optoelectronics and College of Optoelectronic Science and Engineering, Huazhong University of Science and Technology, 430074, Wuhan, People’s Republic of China
Nanoscale Research Letters 2009, 5:570-575 doi:10.1007/s11671-009-9506-4Published: 16 December 2009
We reported the optical and wettability properties of aligned zinc oxide micro/nanotube arrays, which were synthesized on zinc foil via a simple hydrothermal method. As-synthesized ZnO micro/nanotubes have uniform growth directions along the  orientations with diameters in the range of 100–700 nm. These micro/nanotubes showed a strong emission peak at 387 nm and two weak emission peaks at 422 and 485 nm, respectively, and have the hydrophobic properties with a contact angle of 121°. Single ZnO micro/nanotube-based field-effect transistor was also fabricated, which shows typical n-type semiconducting behavior.