Plasmonic-enhanced performance for polymer solar cells prepared with inverted structures

We incorporated gold nanoparticles (Au NPs) in inverted organic photovoltaic devices to enhance the device performance. The photocurrent and fill factors were improved after the addition of Au NPs into the Cs2CO3 buffer layer. The photoluminescent measurements revealed a significant increase of ligh...

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Bibliographic Details
Published in:Applied physics letters 2012-11, Vol.101 (19), p.193902
Main Authors: Kao, Chuan-Sheng, Chen, Fang-Chung, Liao, Ching-Wen, Huang, Michael H., Hsu, Chain-Shu
Format: Article
Language:English
Subjects:
Devices
Gold
Photocurrent
Photoluminescence
Photovoltaic cells
Plasmonics
Solar cells
Surface chemistry
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Summary:We incorporated gold nanoparticles (Au NPs) in inverted organic photovoltaic devices to enhance the device performance. The photocurrent and fill factors were improved after the addition of Au NPs into the Cs2CO3 buffer layer. The photoluminescent measurements revealed a significant increase of light absorption of the photoactive layer. We attribute the improvement to local field enhancement induced by the localized surface plasmon resonance. Further, through the study of the morphologies of the cathode interfaces, we found that the rough surfaces might increase the device resistances. This drawback, however, was overwhelmed by the advantageous plasmonic effects.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4766736