摘要
Metal-semiconductor Janus nanostructures with asymmetry and directionality have recently aroused significant interest,both in fundamental light-matter interactions mechanism and in technological applications.Here we report the synthesis of different Au-ZnO Janus nanostructures via a facile one-pot colloid method.The growth mechanism is revealed by a series of designed synthesis experiments.The light absorption properties are determined by both the decrease of dipole oscillations of the free electrons and the plasmon-induced hot-electron transfer.Moreover,the finite-difference time-domain(FDTD)simulation method is used to elucidate the electric field distributions of these Janus nanostructures.
Metal–semiconductor Janus nanostructures with asymmetry and directionality have recently aroused significant interest, both in fundamental light–matter interactions mechanism and in technological applications. Here we report the synthesis of different Au–ZnO Janus nanostructures via a facile one-pot colloid method. The growth mechanism is revealed by a series of designed synthesis experiments. The light absorption properties are determined by both the decrease of dipole oscillations of the free electrons and the plasmon-induced hot-electron transfer. Moreover, the finite-difference time-domain(FDTD) simulation method is used to elucidate the electric field distributions of these Janus nanostructures.
基金
Project supported by the National Natural Science Foundation of China(Grant Nos.11274370 and 51471185)
the National Key Research and Development Program of China(Grant Nos.2016YFJC020013 and 2018FYA0305800)
