Ultrafine Gold Nanowire Networks as Plasmonic Antennae in Organic Photovoltaics

作者：Oo, Than Z.; Mathews, Nripan; Xing, Guichuan; Wu, Bo; Xing, Bengang; Wong, Lydia H.; Sum, Tze Chien; Mhaisalkar, Subodh G.^*

来源：Journal of Physical Chemistry C, 2012, 116(10): 6453-6458.

DOI：10.1021/jp2099637

• SILVER ISLAND FILMS
• SOLAR-CELLS
• ENHANCEMENT
• NANOPARTICLES
• RESONANCE
• ABSORPTION
• NANOPRISMS
• DISTANCE
• LAYERS
• AG

Solution-processed ultrafine gold nanowires (Au-NWs) have been exploited as plasmonic antennae in organic P3HT:PCBM photovoltaic cells. The careful reduction of the spacer layer thickness which allows the evanescent field to be extended into the photoactive layer and the geometry of the Au-NWs bands which favors the enhanced scattering collectively result in an increased short-circuit current density by 23.2%. The exact nature of the plasmonic effect in Au-NWs incorporated P3HT system and the critical role played by the spacer layer were studied through optical and time-resolved photoluminescence spectroscopy. The improved photocurrent in the Au-NWs integrated devices is due to an enhanced absorption in the photoactive layer which is contributed from an increased plasmon excitation field and far-field scattering of Au-NWs.

• 出版日期2012-3-15
• 单位南阳理工学院