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SUMMARY:Light trapping in ultrathin film plasmonic solar cells
DTSTART:20101011T110000
DTSTAMP:20260916T055301Z
UID:02e6464146514e226635f93786ba0709958a7bac2358fabec2a655ec
CATEGORIES:Conferences - Seminars
DESCRIPTION:Mrs Vivian Ferry\nAlthough roughened back reflectors for a-Si:
 H solar cells have been an integral part of commercial solar cell producti
 on for decades\, back contacts incorporating plasmonic nanostructures are 
 attractive candidates for enhancing optical absorption in thin films due t
 o their ability to confine  light in nanoscale dimensions. Relative to rou
 ghened surface texturing\, nanostructured back contacts can enhance absorp
 tion via controlled coupling of incident free space optical modes into loc
 alized resonant modes and propagating guided wave modes. We have fabricate
 d ultrathin film n-i-p a-Si:H solar cells with square arrays of hemispheri
 cal nanoparticles built directly into the metallic back contact. The reson
 ant scattering of the nanoparticles couples light into photonic waveguide 
 modes\, which is confirmed via angle-resolved photocurrent measurements. T
 he arrays were designed using results from electromagnetic simulation and 
 guided mode calculations\, and the experiments agree well with both simula
 tion and theory.
LOCATION:MTGA\, rue A.-L. Breguet 2\, 2000 Neuchâtel
STATUS:CONFIRMED
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