Metallic Nanoantennae and their Use in Organic-Polymer Photovoltaics
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Abstract
The potential of gold nanorods to act as “antennae” in organic photovoltaic devices and improve performance by enhancing the optical field within the device has been examined. Gold nanorods were blended into the buffer layer of standard poly (3-hexothiopene) (P3HT): 6, 6-phenyl C61-butyric acid methyl ester (PCBM) photovoltaic cells. Increases in both the broad spectrum absorption and device fill factors (as compared to solar cells without nanorods) were observed. A comparison of the internal resistance and absorption allows estimation of what part in the change in performance can be attributed to greater absorption and increases in buffer layer conductivity.
Keywords
Organic photovoltaics Gold nanorods Optical antenna Light absorptionNotes
Acknowledgments
The research was supported by a grant from the US Dept. of Energy under Grant no. DE-FG02-07ER46428 and by the USC NanoCenter.
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