基于金纳米壳阵列的CdSe/CdS量子点薄膜的表面等离子体增强发光

Surface Plasmon-Enhanced Luminescence of CdSe/CdS Quantum Dots Film Based on Au Nanoshell Arrays.

作者信息

Luo Chun-Li, Yang Rui-Xia, Yan Wei-Guo, Chen Chun-Mei, Liu Shu-Yu, Zhao Shi-Jin, Ge Wen-Qi, Liu Zhi-Feng, Jia Guo-Zhi

机构信息

School of Electronic and Information Engineering, Hebei University of Technology, Tianjin 300400, China.

School of Control and Mechanical Engineering, Tianjin Chengjian University, Tianjin 300384, China.

出版信息

Materials (Basel). 2019 Jan 24;12(3):362. doi: 10.3390/ma12030362.

DOI:10.3390/ma12030362

PMID:30682779

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6384793/

Abstract

In this paper, Au nanoshell arrays, serving as a photo-activated material, are fabricated via the combination of self-assembled nanosphere lithography and the thermal decomposing polymer method. The intensity and position of surface plasmonic resonance can be tuned from the visible region to the near-infrared region by changing the size of Au nanoshell arrays. When resonance absorption peaks of metal nanoparticles are matched with emission wavelengths of core-shell CdSe/CdS quantum dots, fluorescent intensity of CdSe/CdS quantum dots can be strongly enhanced. The physical mechanism of fluorescent enhancement is explained.

摘要

在本文中，通过自组装纳米球光刻技术与热分解聚合物方法相结合，制备了作为光激活材料的金纳米壳阵列。通过改变金纳米壳阵列的尺寸，表面等离子体共振的强度和位置可以从可见光区域调谐到近红外区域。当金属纳米颗粒的共振吸收峰与核壳型CdSe/CdS量子点的发射波长匹配时，CdSe/CdS量子点的荧光强度可以得到显著增强。文中解释了荧光增强的物理机制。