AMORPHIZATION OF ZnO NANOWIRES BY PROTON BEAM IRRADIATION

作者：Dee, Chang Fu^*; Ahmad, Ishaq; Yan, Long; Zhou, Xingtai; Majlis, Burhanuddin Yeop

来源：Nano, 2011, 6(3): 259-263.

DOI：10.1142/S1793292011002524

• ZnO nanowires
• proton beam irradiation
• amorphization

We report the effects of 70 keV proton (H+) irradiation on the structure of zinc oxide nanowires (ZnO NWs) for a wide range of irradiation doses at room temperature. It was found that at low dose 5 x 10(15) ions/cm(2) of protons, few defects were created in ZnO NWs and the defects' density was increased with an increasing proton irradiation dose. After the irradiation dose was increased to 2 x 10(17) ions/cm(2), the crystal structure of the ZnO NWs was almost completely damaged and the crystalline wurtzite structure of the ZnO NWs could be transformed into a disordered amorphous structure. Structural changes in the ZnO NWs upon bombardment with 70 keV protons were characterized by high resolution transmission electron microscopy (HRTEM).

• 出版日期2011-6
• 单位中国科学院上海应用物理研究所