Morphology change of self-assembled ZnO 3D nanostructures with different pH in the simple hydrothermal process

作者：Jang Jae Min; Kim Sung Dai; Choi Hee Man; Kim Jin Yeol; Jung Woo Gwang^*

来源：Materials Chemistry and Physics, 2009, 113(1): 389-394.

DOI：10.1016/j.matchemphys.2008.07.108

• Zinc oxide
• Morphology
• Self-assembly
• Hydrothermal process
• pH
• Nanostructure

Self-assembled ZnO 3D nanostructures were fabricated on a Si substrate using a simple hydrothermal process with ammonia and zinc acetate clihydrate solutions at 95 degrees C. The changes in morphology and characteristics of the ZnO nanostructures were investigated over a range of pH (9.0-11.8). The texture of the ZnO crystal was evaluated using the texture coefficient (TC) for the specific reflecting plane. The results showed that pH is the main factor affecting the morphology of the ZnO nanostructure. The ZnO nanostructures fabricated were single-crystalline with good crystal quality. The PL spectra showed that the ZnO nanostructures fabricated at pH >10.0 had good optical properties with low defect content. This demonstrates that the morphology of ZnO nanostructures fabricated using a simple hydrothermal process can be controlled by the pH of the solution.

• 出版日期2009-1-15