Energy transfer between fluorescent dyes in photonic crystals.
Energy transfer from fluorescein (Fl) to Rhodamine B (RhB) in the opal photonic crystals has been investigated by photoluminescence. The results show that the energy transfer can be enhanced effectively by photonic bandgaps. When the fluorescence emission wavelength of donor Fl overlaps the photonic bandgap the fluorescence intensity of the donor is suppressed, while the fluorescence intensity of acceptor RhB is obviously enhanced. This enhancement can be attributed to the inhibition of radiative emission of the donor in the photonic crystals.
Yang
Zhengwen
Z
Department of Materials Science and Engineering, State Key Laboratory of New Ceramics and Fine Processing, Tsinghua University, Beijing, China.
Zhou
Xinran
X
Huang
Xueguang
X
Zhou
Ji
J
Yang
Gang
G
Xie
Qin
Q
Sun
Li
L
Li
Bo
B