Synthesis and surface plasmon resonance of Au-ZnO Janus nanostructures

• 来源期刊: 中国物理B（英文版）
• 关键词: Au-ZnO SERS finite-difference time-domain mechanism
• 年，卷（期）: 2019,（8）
• 页码范围: 84-89
• 页数: 6页
• 语种: 英文
• DOI: 10.1088/1674-1056/28/8/083301

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.