“…Nanostructured ZnO is a promising material for the novel electronic devices development due to its wurtzite crystal structure, wide direct band gap and high exciton binding energy. ZnO can be manufactured in a controlled manner to produce nanostructures with a uniform size, distribution and orientation by vapor-phase synthesis [1], pulsed laser deposition method [2], electrochemical method [3], hydrothermal method [4][5] etc. Hydrothermal method has many advantages when compare to the most common vaporphase synthesis, such as low-cost, low temperature, scalability and ease handling.…”