Plasmon enhancement of organic photovoltaic efficiency in tandem cells of pentacene/C60

Shanlin Pan; Lewis J. Rothberg

doi:10.1117/12.736011

22 September 2007 Plasmon enhancement of organic photovoltaic efficiency in tandem cells of pentacene/C₆₀

Shanlin Pan, Lewis J. Rothberg

Proceedings Volume 6641, Plasmonics: Metallic Nanostructures and Their Optical Properties V; 664109 (2007) https://doi.org/10.1117/12.736011
Event: NanoScience + Engineering, 2007, San Diego, California, United States

Abstract

The effects of thin silver films embedded in a tandem pentacene/C₆₀ photovoltaic cell are investigated. A 2 nm Ag film improves the device's power efficiency under white light illumination from 0.32% to 1.11% by almost doubling its open circuit voltage and enhancing its short circuit current density. The doubled open circuit voltage is due to the formation of two separated photovoltaic pentacene/C₆₀ cells in series where discontinuous silver clusters provide carrier recombination centers. The increased photocurrent density is partly ascribed to improved charge separation and transport associated with the silver layer. In addition, wavelength dependent measurements suggest that plasmon-enhanced light absorption by pentacene due to surface plasmon resonance of silver nanoparticles contributes as much as a factor of 4 to the power efficiency near the plasmon resonance around 450 nm.

Citation Download Citation

Shanlin Pan and Lewis J. Rothberg "Plasmon enhancement of organic photovoltaic efficiency in tandem cells of pentacene/C₆₀", Proc. SPIE 6641, Plasmonics: Metallic Nanostructures and Their Optical Properties V, 664109 (22 September 2007); https://doi.org/10.1117/12.736011

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