摘要
The origin of the Rayleigh scattering ring effect has been experimentally examined on a quantum dot/metal film system, in which CdTe quantum dots embedded in PVP are spincoated on a thin Au film. On the basis of the angle-dependent, optical measurements under different excitation schemes （i.e., wavelength and polarization）, we demonstrate that surface plasmon assisted directional radiation is responsible for such an effect. Moreover, an interesting phase-shift behavior is addressed.
基金
This work was partially supported by the Ministry of Science and Technology of China （No.HH2060030013 and No.2016YFA0200602）, the National Natural Science Foundation of China （No.21573211 and No.21421063）, the Chinese Academy of Sciences （No.XDB01020000）, and the Fundamental Research Funds for the Central Universities （No.WK2340000063）.
