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Lifting Off Spatial Degeneracy of Functions, Where Does It Lead Us for Photovoltaic Device Systems?

Author

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  • Akira Ishibashi

    (Research Institute for Electronic Science, Hokkaido University, N20W10 Sapporo, Hokkaido 001-0020, Japan)

  • Yuto Okura

    (Research Institute for Electronic Science, Hokkaido University, N20W10 Sapporo, Hokkaido 001-0020, Japan)

  • Nobuo Sawamura

    (Research Institute for Electronic Science, Hokkaido University, N20W10 Sapporo, Hokkaido 001-0020, Japan)

Abstract

The defact standard of a solar cell is that electric power generation is made at the same place as photoharvesting is performed, i.e., the function of photoharvesting/photoreception is spatially degenerated with that of electric power generation (photo-electroconversion). Here, in this review paper, we investigate how liberated we are when the degeneracy is lifted off. A conventional concentrator system is, in a sense, a system in which the primary photoharvesting place is decoupled from the photo-conversion part, but is too bulky because the two parts are connected three-dimensionally by photons. We propose a two-dimensional photoreceptor-conversion (2DPRC) scheme in which the photoreception part is spatially decoupled from, but is two-dimensionally connected to the photo-conversion part by a redirection waveguide (RWG). The whole system is in an edge-illumination/photoinjection configuration and concentrator system is quite naturally built, and the edge-injection lift off the trade-off between photo-absorption and photo-carrier collection in the conventional solar cell, leading to a possible high conversion efficiency.

Suggested Citation

  • Akira Ishibashi & Yuto Okura & Nobuo Sawamura, 2020. "Lifting Off Spatial Degeneracy of Functions, Where Does It Lead Us for Photovoltaic Device Systems?," Energies, MDPI, vol. 13(19), pages 1-16, October.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:19:p:5234-:d:424997
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    References listed on IDEAS

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    1. Akira Ishibashi & Tsuyoshi Kasai & Nobuo Sawamura, 2018. "Redirection Waveguide having Discrete Translational Symmetry for Photovoltaic Systems with Solar-Cell Units Placed at the Periphery," Energies, MDPI, vol. 11(12), pages 1-9, December.
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    Cited by:

    1. Akira Ishibashi & Sheng-Fu Liang & Naoto Kato & Ziling Zhou & Tsung-Hao Hsieh & Junji Matsuda & Nobuo Sawamura, 2023. "Designing Coupling of 2-Dimensional PhotoRecepto-Conversion Scheme (2DPRCS) with Clean Unit System Platform (CUSP)," Energies, MDPI, vol. 16(4), pages 1-13, February.

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    1. Akira Ishibashi & Sheng-Fu Liang & Naoto Kato & Ziling Zhou & Tsung-Hao Hsieh & Junji Matsuda & Nobuo Sawamura, 2023. "Designing Coupling of 2-Dimensional PhotoRecepto-Conversion Scheme (2DPRCS) with Clean Unit System Platform (CUSP)," Energies, MDPI, vol. 16(4), pages 1-13, February.

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