Surface relief diffraction gratings for plasmonic photocurrent enhancements in P3HT-PCBM solar cells

Ribal Georges Sabat; Marcos Jose Leite Santos; Paul Rochon

doi:10.1117/12.902649

8 September 2011 Surface relief diffraction gratings for plasmonic photocurrent enhancements in P3HT-PCBM solar cells

Ribal Georges Sabat, Marcos Jose Leite Santos, Paul Rochon

Proceedings Volume 8007, Photonics North 2011; 80071U (2011) https://doi.org/10.1117/12.902649
Event: Photonics North 2011, 2011, Ottawa, Canada

Abstract

A 260 nm layer of organic bulk heterojunction blend of the polymer poly (3-hexylthiophene) (P3HT) and the fullerene [6,6]-phenyl C₆₁-butyric (PCBM) was spin-coated in between aluminum and gold electrodes respectively on top of a laser inscribed azo polymer surface relief diffraction grating. Angle dependent surface plasmons (SP) with a large band gap were observed in the normalized photocurrent by the P3HT-PCBM layer as a function of wavelength. The highest increase in photocurrent was found to be 272% at a wavelength of 618 nm for a grating depth of 50 nm. The SP-induced photocurrents were also investigated as a function of the grating depth and spacing.

Citation Download Citation

Ribal Georges Sabat, Marcos Jose Leite Santos, and Paul Rochon "Surface relief diffraction gratings for plasmonic photocurrent enhancements in P3HT-PCBM solar cells", Proc. SPIE 8007, Photonics North 2011, 80071U (8 September 2011); https://doi.org/10.1117/12.902649

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