Resonant nano-antennas for light trapping in plasmonic solar cells

摘要: We investigate the influence of nanoparticle height on light trapping in thin-film solar cells covered with metal nanoparticles. show that taller nanoparticles scattering cross-section is enhanced by resonant excitation plasmonic standing waves. Tall have higher coupling efficiency when placed illuminated surface cell than rear due to their forward nature. One major factors affecting these particles phase shift plasmon polaritons propagating along reflection from Ag/Si or Ag/air interface. The high cross-sections tall could be exploited for efficient modifying engineering this shift. demonstrate path length enhancement (with a 500 nm) at an incident wavelength 700 nm can increased ~6 ~16 interface coating layer Si.