Effect of the surface of a silicon substrate on the growth of ZnO films by a wet process

Abstract

Effects of a silicon substrate on growth of ZnO in a wet chemical process were investigated. ZnO has been fabricated from base solutions composed of Zn(NO3)2, ammonia and polyethylene glycol at low temperatures by a wet chemical process. When a silicone substrate was immersed in the solution, flower-like ZnO was obtained on the substrate from the solution at pH = 10.4-10.9. In the case without the substrates, Zn(OH)2 powders were obtained from the solution at pH = 10.4-10.9 and ZnO powders, which were not like flowers, were obtained from solution at pH ≤ 7.6.