Plasmon-Enhanced Two-Photon Absorption in Photoluminescent Semiconductor Nanocrystals
详细信息 查看全文
- 作者：Brandon C. Marin ; Su-Wen Hsu ; Li Chen ; Ashley Lo ; Darwin W. Zwissler ; Zhaowei Liu ; Andrea R. Tao
- 刊名：ACS Photonics
- 出版年：2016
- 出版时间：April 20, 2016
- 年：2016
- 卷：3
- 期：4
- 页码：526-531
- 全文大小：490K
- 年卷期：0
- ISSN：2330-4022
文摘
In this work, we demonstrate the two-photon fluorescence of covellite-phase copper sulfide nanodisks and investigate the role of the surface plasmon resonance on emission. Using selenium doping, we blue-shift the plasmon resonance toward the two-photon absorption edge. We observed a 3-fold enhancement of emission in these samples and report two-photon action cross sections that are an order of magnitude greater than conventional fluorophores. These nanomaterials offer a novel “all-in-one” platform for engineering plasmon–exciton coupling in the absence of a physical or chemical interface.