A low temperature in situ facile technique to enhance ultraviolet emission of zinc oxide nanorods and its mechanistic insights

作者：Sarkar S; Basak D^*

来源：Chemical Physics Letters, 2011, 516(4-6): 192-198.

DOI：10.1016/j.cplett.2011.09.070

A novel approach for enhancing the ultraviolet emission properties of ZnO nanorods (NRs) using a in situ facile hydrothermal technique in the presence of excess zinc metal in addition to zinc acetate in the precursor has been demonstrated. The photoluminescence studies show a higher ultra-violet (UV) emission (I-UV/I-VIS similar to 38) in the NRs grown with 15 mM excess zinc metal compared to that (I-UV/I-VIS similar to 5.5) of the NRs grown without excess metal. Electron paramagnetic resonance studies reveal a higher intensity signal at g similar to 1.95 for NRs grown with 15 mM excess zinc indicating the presence of paramagnetic Zn-i in higher concentration.

• 出版日期2011-11-18