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Effect of Extended Extinction from Gold Nanopillar Arrays on the Absorbance Spectrum of a Bulk Heterojunction Organic Solar Cell

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  • Shu-Ju Tsai

    (Department of Materials Science and Engineering, University of Maryland, College Park, MD 20740, USA
    Laboratory for Physical Sciences, College Park, MD 20740, USA
    Current address: Center for Micro/Nano Science and Technology, National Cheng Kung University, Tainan 701, Taiwan)

  • Mihaela Ballarotto

    (Laboratory for Physical Sciences, College Park, MD 20740, USA
    Department of Electrical and Computer Engineering, University of Maryland, College Park, MD 20742, USA)

  • Hung-Chih Kan

    (Department of Materials Science and Engineering, University of Maryland, College Park, MD 20740, USA
    Laboratory for Physical Sciences, College Park, MD 20740, USA
    Department of Physics, National Chung-Cheng University, Tainan 701, Taiwan)

  • Raymond J. Phaneuf

    (Department of Materials Science and Engineering, University of Maryland, College Park, MD 20740, USA
    Laboratory for Physical Sciences, College Park, MD 20740, USA
    Department of Electrical and Computer Engineering, University of Maryland, College Park, MD 20742, USA)

Abstract

We report on the effects of enhanced absorption/scattering from arrays of Au nanopillars of varied size and spacing on the spectral response of a P3HT:PCBM bulk heterojunction solar cell. Nanopillar array-patterned devices do show increased optical extinction within a narrow range of wavelengths compared to control samples without such arrays. The measured external quantum efficiency and calculated absorbance, however, both show a decrease near the corresponding wavelengths. Numerical simulations indicate that for relatively narrow nanopillars, the increased optical extinction is dominated by absorption within the nanopillars, rather than scattering, and is likely dissipated by Joule heating.

Suggested Citation

  • Shu-Ju Tsai & Mihaela Ballarotto & Hung-Chih Kan & Raymond J. Phaneuf, 2015. "Effect of Extended Extinction from Gold Nanopillar Arrays on the Absorbance Spectrum of a Bulk Heterojunction Organic Solar Cell," Energies, MDPI, vol. 8(3), pages 1-14, February.
    • Handle: RePEc:gam:jeners:v:8:y:2015:i:3:p:1547-1560:d:46071
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    References listed on IDEAS

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    1. Qiao, Linfang & Wang, Dan & Zuo, Lijian & Ye, Yuqian & Qian, Jun & Chen, Hongzheng & He, Sailing, 2011. "Localized surface plasmon resonance enhanced organic solar cell with gold nanospheres," Applied Energy, Elsevier, vol. 88(3), pages 848-852, March.
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