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Title: Characterization of plasmonic hole arrays as transparent electrical contacts for organic photovoltaics using high-brightness Fourier transform methods

Journal Article · · Journal of Modern Optics
 [1];  [1];  [2];  [3];  [2];  [1];  [1]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States). Center for Functional Nanomaterials (CFN)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States). Sustainable Energy Technologies; Stony Brook Univ., NY (United States). Dept. of Physics and Astronomy
  3. Brookhaven National Lab. (BNL), Upton, NY (United States). Center for Functional Nanomaterials (CFN); Brookhaven National Lab. (BNL), Upton, NY (United States). Condensed Matter Physics
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Here we present a methodology for probing light-matter interactions in prototype photovoltaic devices consisting of an organic semiconductor active layer with a semitransparent metal electrical contact exhibiting surface plasmon-based enhanced optical transmission. We achieve high-spectral irradiance in a spot size of less than 100 μm using a high-brightness laser-driven light source and appropriate coupling optics. Spatially resolved Fourier transform photocurrent spectroscopy in the visible and near-infrared spectral regions allows us to measure external quantum efficiency with high sensitivity in small-area devices (<1 mm2). Lastly, this allows for rapid fabrication of variable-pitch sub-wavelength hole arrays in metal films for use as transparent electrical contacts, and evaluation of the evanescent and propagating mode coupling to resonances in the active layer.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-98CH10886
OSTI ID:
1261643
Journal Information:
Journal of Modern Optics, Vol. 61, Issue 21; ISSN 0950-0340
Publisher:
Taylor and FrancisCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 4 works
Citation information provided by
Web of Science

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Light-activated photocurrent degradation and self-healing in perovskite solar cells journal May 2016

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14 SOLAR ENERGY
high brightness spectroscopy
metal hole array
organic photovoltaic
Fourier transform photocurrent
laser-driven light source
plasmonic transparent contacts