Author/Authors :
Libo Fan، نويسنده , , Hongwei Song، نويسنده , , Te Li، نويسنده , , Lixin Yu، نويسنده , , Zhongxin Liu، نويسنده , , Guohui Pan، نويسنده , , Yanqiang Lei، نويسنده , , Xue Bai، نويسنده , , Tie Wang، نويسنده , , Zhuhong Zheng، نويسنده , , Xianggui Kong، نويسنده ,
Abstract :
ZnO nanorods with hexagonal structures were synthesized by the hydrothermal method at different conditions. Their room-temperature emission spectra and fluorescent dynamics were studied. The ultraviolet emissions of excitons (3.2 eV) and visible emissions (2.0 eV) from deep levels (DLs) of defects were observed. The results demonstrate that preparation condition pH influences the intensity ratio of the exciton emissions and DLs, as well as the decay time constant of DLs emissions.
