Figure 1

Interaction of surface plasmon. (a) Surface plasmon peak positions as a function of PCDTBT:PCBM active layer thickness exhibiting anti-crossing behavior. Blue and red solid dots represent LSP and SPP peak positions for various PCDTBT:PCBM thicknesses. Blue crosses represent the SPP peak positions calculated from the effective index of the SPP mode supported by the flat silver-PCDTBT:PCBM-air multilayer structure. (b, c) Electric field profiles for the surface plasmon modes in the 80 nm thick PCDTBT:PCBM on silver grating and (d, e) electric field profile for the surface plasmon modes in the 30 nm thick PCDTBT:PCBM on silver grating. To clarify the structure the bottom grating is the silver nanograting fabricated by nanoimprint lithography. The top surface is also corrugated simply by the result of depositing on a corrugated surface (From Ref. [62]).

Interaction of surface plasmon. (a) Surface plasmon peak positions as a function of PCDTBT:PCBM active layer thickness exhibiting anti-crossing behavior. Blue and red solid dots represent LSP and SPP peak positions for various PCDTBT:PCBM thicknesses. Blue crosses represent the SPP peak positions calculated from the effective index of the SPP mode supported by the flat silver-PCDTBT:PCBM-air multilayer structure. (b, c) Electric field profiles for the surface plasmon modes in the 80 nm thick PCDTBT:PCBM on silver grating and (d, e) electric field profile for the surface plasmon modes in the 30 nm thick PCDTBT:PCBM on silver grating. To clarify the structure the bottom grating is the silver nanograting fabricated by nanoimprint lithography. The top surface is also corrugated simply by the result of depositing on a corrugated surface (From Ref. [62]).