Abstract
Nanophotonic structures have attracted attention for light trapping
in solar cells with the potential to manage and direct light absorption on the
nanoscale. While both randomly textured and nanophotonic structures have been
investigated, the relationship between photocurrent and the spatial correlations of
random or designed surfaces has been unclear. Here we systematically design
pseudorandom arrays of nanostructures based on their power spectral density,
and correlate the spatial frequencies with measured and simulated photocurrent.
The integrated cell design consists of a patterned plasmonic back reflector and a
nanostructured semiconductor top interface, which gives broadband and isotropic
photocurrent enhancement.
Original language | English |
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Pages (from-to) | 4239-4245 |
Number of pages | 7 |
Journal | Nano Letters |
Volume | 11 |
DOIs | |
Publication status | Published - 2011 |