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| VOLUME 105 (2017) | ISSUE 12 | PAGE 730 |
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Synthesis and optical properties of ultralong ZnO microbushes
Y. E. Xu+, M. Luo*, K. Yu×
+Department of Electronic Engineering, Shang Hai Jian Qiao College, 201306 Shanghai, China *Department of Physics, Shanghai Second Polytechnic University, 201209 Shanghai, China ×Ministry of Education and Department of Electronic Engineering, East China Normal University, 200241 Shanghai, China
Abstract
Ultralong ZnO microbushes have been synthesized using a simple thermal evaporation and condensation method by Cu catalysts. The lengths of the ZnO microbushes range from several millimeters to more than one centimeter and the diameters of the branches' teeth are about 300 nm. The growth mechanism of the ultralong microbushes and the catalytic behavior of the copper are discussed. Room temperature photoluminescence spectra of the ultralong ZnO microbushes showed a UV emission band at about 388 nm and wide green emissions at around 525 nm. It may be very attractive for commercial applications such as electrical devices, microelectromechanical systems and sensors. |