期刊
IEEE TRANSACTIONS ON ELECTRON DEVICES
卷 58, 期 3, 页码 860-864出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TED.2010.2102630
关键词
Nanocomposites; nanotubes; photovoltaic cells; plasmonic
资金
- Integrated Initiative of European Laser Research Infrastructures LASERLAB-II [228334]
We have explored the effect of Au-nanoparticle (NP)-induced surface plasmons on the performance of polymer-fullerene photovoltaic devices utilizing single-walled carbon-nanotube (SWNT) films as the transparent electrode for hole collection. The Au NPs were produced by ultrafast laser ablation in liquids and were incorporated on the devices in a SWNT/poly(3,4-ethylene-dioxythiophene):poly(4-styrenesulfonate)/NP/poly(3-hexylthiophene):[6,6]-phenyl-C61-butyric acid methyl ester/Al configuration. The NP incorporation leads to a power conversion efficiency improvement of 70%. This increase can be attributed to the improved photocurrent and fill factor due to an enhanced exciton generation rate of the photoactive layer caused by localized surface-plasmon resonances of the conduction electrons within the NPs. This argument was supported by the combinatorial study of the optical properties of the NPs and the photon-to-electron conversion efficiency of the devices.
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