Gold nanoarray deposited using alternating current for emission rate-manipulating nanoantenna
1 State Key Laboratory of Optoelectronic Materials and Technologies, School of Physics and Engineering, Sun Yat-Sen (Zhongshan) University, Guangzhou 510275, People’s Republic of China
2 State Key Laboratory for Biocontrol, School of Life Science, Sun Yat-Sen (Zhongshan) University, Guangzhou 510275, People’s Republic of China
Nanoscale Research Letters 2013, 8:295 doi:10.1186/1556-276X-8-295Published: 24 June 2013
We have proposed an easy and controllable method to prepare highly ordered Au nanoarray by pulse alternating current deposition in anodic aluminum oxide template. Using the ultraviolet–visible-near-infrared region spectrophotometer, finite difference time domain, and Green function method, we experimentally and theoretically investigated the surface plasmon resonance, electric field distribution, and local density of states enhancement of the uniform Au nanoarray system. The time-resolved photoluminescence spectra of quantum dots show that the emission rate increased from 0.0429 to 0.5 ns−1 (10.7 times larger) by the existence of the Au nanoarray. Our findings not only suggest a convenient method for ordered nanoarray growth but also prove the utilization of the Au nanoarray for light emission-manipulating antennas, which can help build various functional plasmonic nanodevices.