On the role of substrate in light-harvesting experiments.
An analysis of the emitted light distribution for a single emitter located at the planar interface of two optical media was performed. The interface of a varying refractive index substrate with air was considered, which is a common case in luminescence microscopy (spectroscopy) experiments. A modification of the radiative recombination rate induced by the variation of the substrate together with the emitted radiation spatial redistribution were taken into account. Simulation results show that the collection efficiency of the emitted light can vary several times depending on the substrate choice and the emitter intrinsic quantum efficiency.
Sychugov
Ilya
I
NTT Basic Research Laboratories, NTT Corporation, Kanagawa, Japan. ilya@will.brl.ntt.co.jp
Omi
Hiroo
H
Kobayashi
Yoshihiro
Y