Photoluminescence enhancement in nanoimprinted photonic crystals and coupled surface plasmons.
A method to enhance the photoluminescence of dye chromophores-loaded by coupling the emission to surface plasmons in nanoimprinted photonic crystals is reported. A 9-fold enhancement in the spontaneous emission intensity of a rhodamine-doped polymer film is achieved on a silver layer due to surface plasmon excitation. By changing the surface plasmon frequency, this enhancement can be suppressed. When the polymer film is patterned by nanoimprint lithography with a twodimensional photonic crystal the photoluminescence intensity increases up to 27 times compared to unpatterned samples on a quartz substrate.
Reboud
V
V
Kehagias
N
N
Zelsmann
M
M
Schuster
C
C
Fink
M
M
Reuther
F
F
Gruetzner
G
G
Sotomayor Torres
C M
CM