Energy and charge transfer dynamics between Alq3 and CdSeS nanocrystals.
The photoluminescence properties of the blend films consisting of organic small molecules and nanocrystals (NCs)--Alq3 and CdSeS NCs--were studied by steady-state and time-resolved photoluminescence (PL) spectroscopy with different excited wavelengths. Both the fluorescence intensity and lifetime are intensively dependent on the NC concentration. The detailed analysis of experiment data proves that Forster energy transfer from the Alq3 to the NCs exists simultaneously with the charge transfer and both compete with each other in the blend films.
Zhang
Shuping
S
Center for Condensed-Matter Science and Technology, Department of Physics, Harbin Institute of Technology, Harbin 150001, China.
Liu
Yuqiang
Y
Yang
Yanqiang
Y