Vertically aligned arrays of ultralong ZnO nanowires were synthesized on SiO2 substrates with carbothermal vapor phase transport method with Au seeding layer. High density of vertically aligned ZnO nanowires with lengths from a few to ∼300 μm could be grown by controlling growth conditions. Supply of high concentration of Zn vapor and control of the ratio between Zn vapor and oxygen are found to have the most significant effects on the growth of long ZnO nanowires in the vapor-solid growth mechanism. The nanowires are of high crystalline quality as confirmed by various structural, compositional, and luminescent measurements. Luminescent and electrical properties of ZnO nanowires with different growth conditions were also investigated.
|Number of pages||8|
|Journal||Materials Science and Engineering B: Solid-State Materials for Advanced Technology|
|State||Published - 15 Feb 2012|
Bibliographical noteFunding Information:
This work was supported by Priority Research Centers Program ( 2010-0029617 ) and Nano R&D program through the National Research Foundation of Korea (NRF) by the Ministry of Education, Science and Technology, and Excellence Research Program in Ajou University.